More Billion Dollar Startups: Facebook search results:

Instagram
Instagram is an online mobile photo-sharing, video-sharing, social networking service that enables its users to take pictures, videos, share them on a variety of social networking platforms, such as Facebook, Twitter, Tumblr, Flickr. A distinctive feature is that it confines photos to a square shape, similar to Kodak Instamatic, Polaroid images, in contrast to the 4:3 aspect ratio typically used by mobile device cameras. Users can also apply digital filters to their images. The maximum duration for Instagram videos is 15 seconds.
twopointouch | web 2.0, blogs and social media
Social tools, devices and web evolution are creating epochal change in media, society and business. Documenting some of the more interesting parts of that change.
SociableBlog: Social Media News & Tips - Facebook, Twitter, Google, Startup
Social media news blog focused on Social Networks from Google+, Twitter to Facebook, also writes about Startups, Apps, SEO, Infographic, Mobile and more
Co: Where Your Worlds Come Together
Co brings your personal messages from all your social networks together in one place.
Mashable
Mashable is a leading source for news, information & resources for the Connected Generation.
Social Media Management | Buffer
Buffer makes it super easy to share any page you're reading. Keep your Buffer topped up and we automagically share posts for you through the day.

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