There's no limit.
As most of you know, my goal is to connect tennis players and tennis fans with one another. As the site gets bigger, the matchups get better. We have almost 30 people in our big metropolitan groups. I foresee a day when instead of an "Austin Tennis Group", we'll have a "North Austin 4.5 Tennis" group and that's a very good thing. I foresee pages for your tennis club too. I belong to a tennis club and setting up matches is a pain, you have to go to the club roster and start calling people on the phone one by one. Wouldn't it be nice to go to an ABC Tennis Club group on Tennisopolis and post, "anybody up for 3.5 singles on Saturday at 11?" Of course, and that's a reality now with our system.
Other growth you're going to see. Just like on MySpace and other big social networking sites, you'll start noticing members with something to sell. Whether it is tennis equipment or tennis lessons, they will be part of this community too. We're going to establish some commercial user guidelines, but for the most part, they'll be an integral (and inevitable) part of the site.
Soon, we'll have a Member Map where you can search the map to find people in your area to hook up with.
So, keep refering your friends or anybody you meet with a tennis bug. Earn chances in our 200 dollar giveaway and help build the most powerful tennis site there is.
If you have any suggestions, let me know.