Calling all enterprise 2.0 vendors: Launch Pad is returning to Santa Clara. Enter to win fame, glory, plus a couple of cool prizes.

All emerging and established enterprise 2.0 companies are encouraged to participate, specifically technology vendors that have a play in enterprise social software or collaboration platforms.

Submitting is easy. Simply Twitter pitch to #e2conflp and tell us about something new – a new feature, new integration point, new partnership – anything new within the calendar year of 2011 counts. You have 140 characters and until September 5, 2011 to send out that Tweet.

The seven best Twitter submissions will be selected on September 9 by the Jury and move on to the video round.

More information about the competition, who can enter, and a schedule of key dates can all be found on the Launch Pad site.

Good luck!