The owners of ProBitcoin.org are SCAM ARTISTS.

INDISPUTABLE PROOF CAN BE FOUND HERE - http://bit.cur.lv/ProBitcoinScammers

ProBitcoin.org was previously operating under the domain name: ProBitcoin.it when it was revealed to the public that the owners were SCAMMING their members.  When this came to light, Probitcoin.it was quickly shut down and reopened with a new domain name: ProBitcoin.org

Again, INDISPUTABLE PROOF can be found at http://bit.cur.lv/ProBitcoinScammers

DO NOT BE FOOLED BY THESE ASSHOLES.

Examining Probitcoin.org we can see:

"Only 0.2 Bitcoin / 3 Month(Limited Discount!)
Premium Discount end:
12/20/2013!
Upgrade My Account

Regards.
Clarissa T.
Probitcoin Inc 
Sales Department"

ONLY 0.2 Bitcoins?!?!?!  That's $176 at today's BTC rate!

"Conected Cloud Mining: Cloud Server: (0)Server Run, Conected: (0)Member" - as in Cloud Server does not work.

At top of page -  0 GHS Cloud servers speed. 0 Cloud servers connection. - AGAIN, proof they are not ACTUALLY A CLOUD MINING OPERATION.

DO NOT BE FOOLED.