Here i found a website who show all mining website who scam or seem to do scam.
And yes cointellect is inside of that list. You can also send a mail to their site to let them verify if
the website is safe.
Take a look !!
http://www.badbitcoin.org/thebadlist/index.htm#C

Also ive tried my (1) gridseed blade on their website 1.5$ max a day
With 5 gridseed 1.5$ max a day
With my both graphic card 1.5$ max a day ...
Strange no?

Look like its a Pyramidal scheme