I know it's fast but it rises too fast

Proof:

Sellers:

http://www.tf2outpost.com/trade/11612948 - Unbumped, wants 3 ref, 2 adds from last time it was bumped, both bought from others at 2.66 - 3, both were willing to pay 3 but he probably didn't respond and they found same or lower

http://www.tf2outpost.com/trade/11715945 - Selling for 2.66, look at the amount of written adds in the short time of 3 days

http://www.tf2outpost.com/trade/11772166 - Sold for 3 in less than a day

http://www.tf2outpost.com/trade/11783662 - Selling at higher end (3.33), seems to have an add in less than a day

http://tinypic.com/view.php?pic=ac97r9&s=5 - Last suggester used this pic which is his own proof of selling for 3.33, by his words it took him less than an hour

http://www.tf2outpost.com/trade/10971809 - Selling for 3.66, many recent sales

Buyers:

http://www.tf2outpost.com/trade/11813209 - Buying for 2.66 (young), we'll keep an eye on this

http://www.tf2outpost.com/trade/11775554 - Buying for 3, he's successfully reselling at 3.66

Selling at 3 or higher is very simple, 2.66 has become an obvious quicksell and there's a buyer at 3 (auto-bumped trade) which means you can just search it and sell easily at 3 if you don't want to wait for a better offer (which will probably come very fast)