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Djokovic inspired by Serena as he targets history at Wimbledon
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Thousands ride through Rome as Vespa celebrates 80 years
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Stokes falls cheaply as England collapse in New Zealand decider
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Sinner ready for Wimbledon defence despite lack of time on grass
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Russell bounces back to beat Antonelli in final practice
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Records tumble as European heatwave moves east
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Iran says US violated peace deal as both sides trade fire
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England, Portugal eye top spots as World Cup group stages wrap up
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Injured Australian pair Leckie, Italiano out of World Cup
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US, Iran trade strikes putting new strain on Middle East truce
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Farmers fear drought as Italy's longest river runs dry
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Thousands expected as Vespa celebrates 80 years in Rome
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Budapest Pride to push for equality after reversed ban
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Pino, Williams injuries mar Spain's World Cup progress
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World Cup fans get taste of American life -- at the mall
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'Struggle continues' in Bolivia's Morales heartland
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World Cup turns New York's Times Square into global fan hub
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Bielsa accepts blame for World Cup exit, but says Uruguay deserved more
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Lebanon, Israel and US sign trilateral framework pact
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Uruguay crash out of World Cup as Spain avoid Argentina clash
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Cape Verde extend World Cup fairytale to set up Argentina meeting
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Swiss glaciers facing drastic loss from heatwave: expert
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Messi to start dead-rubber World Cup group match on bench
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Trump unveils new US passport -- with picture of himself
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US and Iran trade strikes putting new strain on Mideast ceasefire
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Hat-trick hero Dembele displays Ballon d'Or brilliance for France at World Cup
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Maple Leafs make teen McKenna top pick in NHL Draft
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Injured England defender James to miss Panama game at World Cup
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California appeals court orders Weinstein resentencing for sex assault
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Norway coach defends decision to leave out Haaland, Odegaard against France
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Scheffler fires 60 to grab 36-hole PGA Travelers lead
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Movie theaters are allies for streamers like us, Apple exec says
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Austria's Rangnick shuts down conspiracy talk ahead of Algeria World Cup clash
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DR Congo must take risks to keep World Cup 'dream alive', says Desabre
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Should we fear an AI bubble bust?
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Jangoo, Chase keep West Indies in touch against Sri Lanka
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US strikes Iran sites after cargo ship attack
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Dembele hat-trick as France swat Norway, Senegal stay alive
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Gueye double keeps Senegal's World Cup hopes alive
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Dembele hits hat-trick as France thrash second-string Norway at World Cup
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US stocks recover from tech tremors as oil prices fall
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Globalization isn't dead, just 'transformed,' says IMF chief economist
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OpenAI restricts limited release of new model to US only
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Israel and Lebanon hail Washington deal, rejected by Hezbollah
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Scheffler fires 60 to grab early PGA Travelers lead
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Usyk -- pugilist who kept Ukrainian spirits high in darkest days
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Trump blasts 'godless' Democrats in incendiary speech to evangelicals
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Orange wave: Dutch World Cup dream gathers pace
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Venezuela earthquakes kill 920, tens of thousands missing
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Swiss nuclear plant shut down due to heatwave
Twitter chaos leaves door open for Meta's rival app
Elon Musk spent the weekend further alienating Twitter users with more drastic changes to the social media giant, and he is facing a new challenge as tech nemesis Mark Zuckerberg prepares to launch a rival app this week.
Zuckerberg's Meta group, which owns Facebook, has listed a new app in stores as "Threads, an Instagram app", available for pre-order in the United States, with a message saying it is "expected" this Thursday.
The two men have clashed for years but a recent comment by a Meta executive suggesting that Twitter was not run "sanely" irked Musk, eventually leading to the two men offering each other out for a cage fight.
Since buying Twitter last year for $44 billion, Musk has fired thousands of employees and charged users $8 a month to have a blue checkmark and a "verified" account.
On the weekend, he limited the posts readers could view and decreed that nobody could look at a tweet unless they were logged in, meaning external links no longer work for many.
He said he needed to fire up extra servers just to cope with the demand as artificial intelligence (AI) companies scraped "extreme levels" of data to train their models.
But commentators have poured scorn on that idea and marketing experts say he has massively alienated both his user base and the advertisers he needs to get profits rolling.
In another move that shocked users, Twitter announced Monday that access to TweetDeck, an app that allows users to monitor several accounts at once, would be limited to verified accounts next month.
John Wihbey, an associate professor of media innovation and technology at Northeastern University, told AFP that plenty of people wanted to quit Twitter for ethical reasons after Musk took over, but he had now given them a technical reason to leave too.
And he added that Musk's decision to sack thousands of workers meant it had long been expected that the site would become "technically unusable".
- 'Remarkably bad' -
Musk has said he wants to make Twitter less reliant on advertising and boost income from subscriptions.
Yet he chose advertising specialist Linda Yaccarino as his chief executive recently, and she has spoken of going into "hand-to-hand combat" to win back advertisers.
"How do you tell Twitter advertisers that your most engaged free users potentially will never see their ads because of data caps on their usage," tweeted Justin Taylor, a former marketing executive at Twitter.
Mike Proulx, vice president at market research firm Forrester, said the weekend's chaos had been "remarkably bad" for both users and advertisers.
"Advertisers depend on reach and engagement yet Twitter is currently decimating both," he told AFP.
He said Twitter had "moved from stable to startup" and Yaccarino, who remained silent over the weekend, would struggle to restore its credibility, leaving the door open to Twitter's rivals to suck up any cash from advertisers.
- 'Open secret' -
The technical reasons Musk gave for limiting the views of users immediately brought a backlash.
Many social media users speculated that Musk had simply failed to pay the bill for his servers.
French social data analyst Florent Lefebvre said AI firms were more likely to train their models on books and media articles than social network content, which "is of much poorer quality, full of mistakes and lacking in context".
Yoel Roth, who stepped down as Twitter's head of security weeks after Musk took over, said the idea that data scraping had caused such performance problems that users needed to be forced to log in "doesn't pass the sniff test".
"Scraping was the open secret of Twitter data access," he wrote on the Bluesky social network -- another Twitter rival.
"We knew about it. It was fine."
A.O.Scott--AT