Giving away 3 beta keys

I have 3 keys that I want to give away. I'm not very creative in doing giveaways so just post whatever you want and I'll just pick the three people whose comments I like the most.

My only requirement is that you have 100+ hours in either 1.6 or source, I don't want to give it to someone who just wants to try it out for a few hours.

EDIT: Please post your steam profile as well so I can see that you have 100+ hours

EDIT 2: All keys are gone.