STOP USING THIS SCAM SITE: Bitcoinvest.cc!!!
I registered only for leaving a message here to anyone plan to invest through Bitcoinvest.cc.
I used it for a little over than 1 month and I got regularly payment as they promised on the website at beginning. However, from about 3 days ago they stopped paying me or responding my contact/inquiry. I ended up with returning all the "earned profit" back to them...
The lucky thing was I did my investment with highly suspicious mind at the first second (I believe all other users have the same feeling as mine). So, (a) I only invested a small amount and (b) I only invested the Bitcoin I earned from them (never buy more to invest although I got regularly and temptingly paid for weeks).
You take whatever lesson from my experience: Either try your luck or stay away from them.
THE TRUTH IS: THEY COULD STOP PAYING YOU WHENEVER THEY WANT TO! Just FYI.