First: Congratulations on reaching this milestone! Second: No intro page. Keep the front page as functional as possible, so people can immediately see what t

First: Congratulations on reaching this milestone! Second: No intro page. Keep the front page as functional as possible, so people can immediately see what the site is about it, what it does and why it is useful. You should already have a "Join" or "Sign up" link on the front page. Keep it. If necessary, make it more prominent. Don't overemphasize that you're in Beta. While this is doubtless a milestone for you, new users could care less. They want software that works well. Use the front page to show them what your software does, why it works well and why they should want to sign up. You can do this by highlighting what the software does for existing users, perhaps providing live examples. Show, don't tell. If you can, give people a way to play with your software without signing up. Perhaps a sandbox, perhaps by not asking for login until they want to save what they've made. You want people to start using your tool as quickly as possible, with as few barriers between them and the tool as possible. Signing up is a huge barrier. People won't sign up unless they want to use a service, and if they can't use a service until after they sign up, how will they know that they want to use the service? Again: Show, don't tell. Best of luck :)