Press, PR, Google searches don't work so well, if you want to track real revenues. Google Trends is a decent proxy for users, but not true success.
One of the simplest ways is to just check the number of employees a start-up has on LinkedIn. One way or another, once you have say > 6-8 employees .. the absolute number of and more importantly, ... (more)
As a general list of the day-in-the-life, I couldn't put together a better list than Rob Rawson did in his answer to this question.
But let me be more strategic. By post-Launch, I think you really mean post-Lauch ... but pre-Traction.
You. Must. Get. To. Traction.... (more)
In the consumer internet/tech space, Craigslist may be a contender, with I believe 20-30 employees when they hit $100M in revenue. I'm guessing there are porn businesses that generate a lot of cash with a small team as well.