TradeVibes, co-founded by four (4) ex-PayPaler, is a leading contender in the user-generated startup directory. On the landing page, one can find all the interesting new startups that were submitted by users. If you’re looking for the basic information about a startup, particularly from the emerging technologies field, TradeVibes is the right place for you.

TradeVibes’ Web-based startup information primarily were submitted, edited by its own users. Upon an user is sign-up to the service, she can straight away updating startup information or posting news and discussions. Likewise, an user can add a new startup information to the TradeVibes database, such as add the description of the new startup that has not yet be appeared on TradeVibes (1,000 characters maximum), etc.

TradeVines is up against a less fierceful competition, CrunchBase is the one that currently offer the free technology startup database, and the other one, is the KillerStartups, a blog-like startup review directory. However, I like the way TradeVibes offered to the public, which I can easily find the key people behind the startup, the funding history a particular startup received, and the related companies in the same categories.

Even though there is no de facto standard for the tech startup database, TradeVibes is continually develop features that help to retain its existing users. Now TradeVibes has the Startup Battle, a prize, i.e. Wii to be given to the users every week (check out the contests listed in the sidebar), Top Bullish Movers and Top Bearish Movers, widget that can be embedded on one’s own blog or Website, and etc. just to name a few. In addition, to encourage users in participate to the TradeVibes, whenever one submitted a new startup, a one (1) TrV Points will be awarded to the user, and she can use it to exchange for the items from TradeVibes.