Biz Stone, a Twitter co-founder, originally launched Jelly a few years ago where it got a little attention and then just lost appeal before it was dropped as a project. It is now coming back and users can now reserve usernames. For those who don't know, Jelly is a search engine of sorts similar to WikiAnswers or Yahoo Answers where a question is asked and then answered by other people. When Jelly first came out, there were a ton of people sharing information about their favorite hobbies, professions, studies, etc., but not enough people asking questions and trying to find these answers. The idea behind the engine is to remove the need for users to go through search results and to provide high-quality answers and responses as opposed to high-quanitity. It is closed beta at the moment but will be fully released soon.