I should clarify that I posted this, not Browserling. I'm just a happy customer.

I put YC Reject in the title because I thought it would be interesting to explore the companies who didn't make it into YC, but have still grown into successes.

Agreed, let the YC thing go. Be "Browserling - Growing Success with 100 Customers!" instead of "Browserling - YC Reject".

Congrats on hitting the 100 mark!