A busy social shopping season for Google
Angstro builds apps to easily exchange information among social services across the Web, pulling in data from social sites including Facebook, LinkedIn and Twitter.
Over the past few months, it has invested in Zynga, which makes online games that people play on social networks, and acquired Jambool, which builds apps, virtual goods and virtual currency for social networks.
Google also acquired Slide, which makes apps for social networks, and Max Levchin, a Slide and PayPal co-founder, now works at Google. Earlier this year, it bought Aardvark, for getting questions answered by people in your social network.