What is success? Ok, I'm not going that broad... what is success in a web startup?
I've had bunches of conversations with entrepreneurs all over the success scale, from concept level to recently acquired, and all have different definitions of what 'success' is.
One founder I know regularly uses the world success, 'we've built three successful web apps' or 'I've successfully launched my first company.' Other people don't even really consider acquisition a success, just a stepping stone for further growth.
So what is success in the web? 20,000 uniques? 10,000 active users? 1,000,000 page views? 1,000 page views? Revenue?
'Successful' I think is another filler word I want to remove when talking about websites, same as 'empower' just because it seems to be over used. Successfully exited 3 companies certainly makes sense, but 'successfully launched' is just simply too hard to define.
Make your own definition of success, but most entrepreneurs I know never consider themselves successful anyways...they're too busy thinking through their next great idea.