there's a topic like this made today, but basically any and every reason:
winning, not saying thanks for win, saying thanks for win, opinions posted in forums, library size, played wins, free games given away, region restricted / group only giveways, etc

thank you :)

Thank you!

Thank you!

ty

Thanks! :-)

Thanks for opportunity to win!

thanks <3

thanks

thanks!

Thank you!

Thanks

Thanks! Good luck to everyone.