Stupidest thing you've done on Steam?

Bought Bioshock Infinite.

i bought "The name in the Game" edition of Prison Architect

Bought GMod and Terraria at full price.

Buy and activate Saints Row The Third Complete & Metro 2033... and just in one week after i do it, the Humble Deep Silver Bundle has been released.

Got a job instead of just playing on Steam all day.

Magical Drop V; a game so bad I'm afraid to even link to it.

I had $90 in my wallet but no money left in my bank. I decided to put off putting the money in as much as possible. One day, the Huge Seal deal comes up and I decided I NEEDED to buy buy games. I charged up about $135 worth of overdraft fees buying about $20 worth of games. By the time I paid it all back, winter sale was over. :/

And it was all games I never would've played too. =.= Fuck me, right?

Close second? Spending about $70 on crafting badges right before the summer sale and before the mystery cards were dropped.

I bought the Valve Complete Pack. Pretty much Valve's entire catalog is censored in Germany, even Portal and TF2.

I was pretty pissed off because while you do get a "Low Violence" warning if you buy a censored game, you'll never see it if you buy a pack that includes a censored game.

Sold 1 case from CS:GO for around 6 cents when it was worthed around 60....

I spent $500 on trading cards and leveling up. Stupid? yes. regrets? no.

I've had a pretty tame time on Steam. One time a guy friended me just to get a TF2 item from me; I don't play it and have no idea what it was. It was probably valuable, so in hindsight it was probably stupid that I let him have it. I just figured, I don't care about this object and it'll make this other person happy.

But yeah. As far as "stupid things I regret," my worst is probably buying Bioshock Infinite on release week for $45. It was not worth that money to me at all. But if that's the stupidest thing I've done, then my Steam life hasn't been that bad at all.

Bought Call Of Duty 2 for free by selling cards.
I took exactly 3 months to gather and sell the cards to sum up $15 when there was an offer on Steam.

The game is nowadays quite empty. :D

Purchased L4D by mistake...

I once posted this exact same thread on Steam forums... And it got locked. ._.

I opened a booster pack instead of selling it on Market. I lost a whole $2 doing that. ;)

make an avatar picture about my penis

lol, not...

Created multiple badges for the pos called Arkham Origins.

Paid full price for Left 4 Dead way back in the day. Ended up barely playing it. It sounded a lot more fun than it actually ended up being.

sell steam cards, buy steam cards for another game, make badges.

the absolute worst thing you could do on steam, and I did it:
I bought infestation survivor stories, a.k.a The War Z, during it's 90% off sale.
;-;

Difficult to say. Was it the time I sold a card on the marketplace for 1/10th of it's market value? Or what about when I made a giveaway for a game but forgot to finish the transaction (it was in my cart) while it was still 80% off? And then there's the time when I accidentally sent two copies of a game to one winner, leaving me a game short for another winner. (No, the guy didn't return the extra copy.)

Live and learn. Die, and learn faster.

Bought a game at full price.

Bought too many games. Steam wont be around forever so that day is gonna hurt my gaming lib.