Let's start this thread and have some fun figuring out who here was a member on their site
I'm not a customer of Mt Gox myself, which is very fortunate of me. I only use Localbitcoins to buy my bitcoins, and occasionally some other major exchanges. But I never used Mt Gox.
I feel sorry for all who have lost their savings at Mt Gox. It's really a tragedy to bitcoin. And so is cryptsy. The lesson learned is that never keep your coins for a long period of time on an exchange.