This post is more thinking out loud (what I like to do on this blog). Free association with services and sharing.

Snoop Dogg on Instagram

Many sites serve to provide information (such as Wikipedia). Other sites share info (such as Fmylife). What I want to focus on are services that share info in a defined social group. Meaning that you can cultivate lists of friends and share with them. These social sites may enable you to share publicly. In fact, they may be incentivized to make everything public (à la Facebook).

Here are some services I came up with in no particular order:

Clearly there are services I’ve missed.

For any unfilled areas, there exists a startup opportunity. Instagram is a newcomer that has gained significant traction, so anything can be done given proper execution.

Is there a search engine that shares all your searches on purpose? What about an Instagram for short video?