Thank You

Great! Thanks a lot!!

thx

Thank you

tyvm nice day

Thank you!

ty

Thanks!

Thanks ^^

ty

awesome

Thanks!

Thanks. :)

ty

Thanks for this giveaway!

Thanks a lot

Thanks

Thanks alot!

ty

Thanks very much :)

ty

thanks

bless!

Thanks!

Thank you very much

For feedback: I prefer giveaways in which there is at least a $1 base donator mark, so people can't just use a mass of idle accounts they've created for tf2 or something like that.
Having multiple copies in a giveaway is always a good thing.
I think you've chosen a right amount of time. If there's a giveaway longer than 2 hours, it often isn't worth the hassle because a too large group can sign up. There will also be less anticipation, because there is a lot less of the "thrill of the moment" vibe.

All in all, I think this giveaway is good, but a base donator mark (even $0.01) could help