Can I make a giveaway too give dota 2 key?

[x] answers own question

[x] still makes thread

[x] checkboxes

(Yes)

I assume you're talking about DOTA 2 Treasure Keys, not a Steam key for the game, correct? If yes, market items aren't supported by the site, but you can host your own informal giveaway through the forum and choose people to give them to.

you can't giveaway free games and you also can't giveaway any other items that aren't games, steam games

You can trade those keys for games on: steamtrades.com | dispenser.tf | tf2outpost.com
and then.. setup a giveaway here.

You can but you can't gain cv, if you want cv, trade keys for a game and make a common giveaway, gg easy