We had an automated invitation system - the usual, "put in your email, wait a while for the invite" thing. It was true that were only adding a couple hundred pe

We had an automated invitation system - the usual, "put in your email, wait a while for the invite" thing. It was true that were only adding a couple hundred people a day during the early days. We weren't ready for more. We were so not prepared for the interest - it's funny to think back on it now. When we hit 5,000 users we were amazed. I think that we had actual performance issues for about a month (maybe a little longer?) when we outgrew our single dedicated server and hobbled along until we built a more permanent home. Luckily, people were very patient and understanding.