Should you sell your cards or keep them?

Sell them.. I don't need them..

1) Trade me all your cards for Fortix
2) You can just idle them.
3) I sold every card i got.

Sell them. :D

Well, you're never, ever going to collect all the cards anyway...

I'm keeping my cards.

I sold my tf2 cards. Cause, well, tf2 is kinda dead to me. The only good thing is just idling, getting the items then crafting them into refined metal then trade them for keys or games

I noticed that CS:GO thing too lol.

So far I sold all my cards for just enough to get 7 tf2 keys that I used to trade for games.

sold em, made like $20 on the market in the last few days

Magic. Do magic.

sell cards immediately due to strong demand

Sell them now, once Trading card beta goes public people will go nuts and try to sell their cards, going one cent under the previous guy, resulting in really low prices. Then you can buy the ones you need. Prices will go up again once people realise that cards are a limited ressource, but once the impact starts you can get anything you need like I said.

One reason you might hang on to them is because I assume there will be more. These are "Series 1". And if they're crafted into badges, they'll disappear, making them eventually rarer (assuming "Series 1" ends when "Series 2" starts up). However, everyone and their dog will have these cards, so that's gonna be either a very long term investment strategy or just a pointless one unless you collect a lot (particularly, the foils).

Sold them, like I did with all my TF2 items I gathered as well. Made some pretty good money with it all together (about 30 euros)