Social Media News Ticker: Twitter Updates for Mac, LinkedIn Launches Contacts, Mobile Ads on Tumblr

Here’s your quick weekly summary of all the latest social media news, including changes and new features on Twitter, Facebook, LinkedIn, Tumblr and Google:

Twitter

New improvements to Twitter for Mac – Twitter’s updates for Mac include improved photo sharing, retina display support, and 14 additional languages (Twitter)

Twitter completes multi-year deal with ad holding company Starcom MediaVest Group – the details of the deal are vague, but SMG clients will get ‘first dibs’ on premium Twitter inventory, as well as new ad units currently in development (AdAge)

Twitter now has a two-step solution – Twitter is internally testing a new two-step security solution, which should reduce the risk of users having their accounts hacked (Wired)

Twitter testing new local discovery features – Twitter is testing a new feature that lets users discover tweets from people within a certain distance of their location at any given time (AllThingsD)

Facebook

Facebook snaps up team behind mobile startup Spaceport – Facebook acquired the team – but not the technology – behind Spaceport.io, a startup focused on giving developers tools to bring Web-based applications to mobile devices (AllThingsD)

LinkedIn

LinkedIn launches contacts product for iOS and the web – the new feature pulls users’ contacts together from their personal LinkedIn network, Google, Yahoo, Microsoft and more networks (but not from their Facebook and Twitter accounts); it is now available on LinkedIn’s website and as a mobile iOS standalone app (AllThingsD)

 LinkedIn Contacts iPhone App

Tumblr

Tumblr rolls out mobile ads, which will appear alongside posts in user streams – one week ago, up to four ads per day began appearing directly in users’ content streams on both iOS and Android apps; ads will also eventually be coming to desktop computers (PaidContent)

Google

Google crashes Facebook Home’s easy updating party, now requires all Play apps to be updated through the Play store – a change in terms and conditions means that any update to Play Store apps must be served through the Play Store itself, including updates to Facebook Home (TechCrunch)

Google AdWords enhanced campaigns now let advertisers highlight their Google+ follower count, get improved in-app targeting –  AdWords advertisers can now easily highlight their Google+ follower counts in their enhanced campaigns (TechCrunch)

Did we miss any updates?  Let us know in the comments below.