Digital Spy rounds up the biggest stories from the last seven days in pictures. Week's biggest tech news in pictures The web giant adds the San Francisco-based contacts app to its portfolio. Yahoo! buys 'smart address book' Xobni The deal is allegedly worth somewhere between $40 million and $50 million. Yahoo! acquires video service Qwiki The search engine bows out on July 8, along with 11 other services. AltaVista among latest closures at Yahoo The FTC sends a letter to leading search engines warning them to label adverts. Google, Yahoo warned over ad labelling ISPs agree to work more closely with police to find and block indecent images. Web firms commit £1m against child porn The web giant joins Apple, Microsoft and Facebook in offering full disclosure. Yahoo! reveals government data requests The new Yahoo Sports app has a revamped design and new features. Yahoo relaunches Sportacular app Three original shows covering politics, technology and business will be included. Yahoo signs content deal with Sky News All usernames left inactive for more than a year will be available once again. Yahoo! to reset all inactive IDs Britain's main security agency is reportedly receiving data from US tech firms. UK security agency 'using PRISM data' Numerous tech firms say they do not give US government direct access to servers. Apple, Facebook, more on NSA controversy Yahoo and Microsoft also speak out against the Communications Data Bill. Google, Facebook reject snooper's charter Reports suggest Yahoo has made an offer for the streaming service. Yahoo 'makes offer for Hulu' Parent company Yahoo announces the redesign at an event in New York. Flickr revamp unveiled, 1TB free space CEO Matt Mullenweg says 72,000 imported blog posts came from Tumblr on Sunday. WordPress sees jump in Tumblr imports Marissa Mayer says that Tumblr will "Keep Calm and Carry On". Yahoo to buy Tumblr for $1.1 billion If accepted, Tumblr CEO David Karp would remain for at least four years. Yahoo 'agrees Tumblr buyout for $1.1bn' Rumours suggest that Yahoo may announce its acquisition of Tumblr. Yahoo to announce "product-related news" CEO Marissa Mayer has reportedly held talks with the online video site. Yahoo! linked with Hulu acquisition CEO Marissa Mayer has been seeking an end to the agreement since taking over. Yahoo 'to end Microsoft search contract' The Astrid task management app is the latest acquisition in a string of changes at Yahoo. Yahoo acquires task management app The French government reportedly opposes the US company's attempted buyout. Yahoo Dailymotion bid 'axed by minister' The web giant's CEO has reportedly been added to the gadget maker's board. Yahoo's Mayer 'joins Jawbone board' Digital Spy rounds up the best new releases on Google Play and the App Store. Best new mobile apps for iOS, Android The application has launched in America with other territories to follow. Yahoo! rolls out new iPhone app The Chinese Yahoo Mail service is to close completely in August. Yahoo to close Chinese email service Yahoo will close a number of products in a bid to refocus its business Yahoo announces more product closures The web company launches an aesthetic weather app and new native Mail apps. Yahoo launches new iPhone, Android apps The two tech companies are allegedly in talks about an expanded partnership. iPhone to get deep Yahoo integration? UK customer are flooded with old emails as Sky switches from Google to Yahoo. Sky email switch sparks user complaints The internet giant purchases teenager Nick D'Aloisio's popular mobile service. Yahoo acquires news summary app Summly Tim Converse and his fellow Jybe co-founders return to their former employer. Yahoo acquires social media startup Jybe The internet giant is reportedly targeting a controlling stake in the website. Yahoo 'eyeing DailyMotion acquisition' Yahoo Message Boards, Clues and Avatars will also be discontinued. Yahoo shuts BlackBerry app, other products The entrepreneur will attend board meetings but will not have voting rights. Yahoo co-founder Jerry Yang joins Lenovo The internet giant reveals a news-centric layout with social features. Yahoo unveils revamped homepage A number of subscribers have their private photos made public for 20 days. Flickr bug exposes users' private photos Russia's Yandex overtakes the Microsoft search engine with a 2.8% market share. Bing down to fifth on search leaderboard The service urges people to notice their privacy settings and geolocation data. Flickr marks Safer Internet Day