Great read, I myself have invested some click time into thebitgoldmine.net. I have only used the free versions as it does seem a bit sketchy as far as web pages go.
I have actually ran multiple browsers on both my mac and my mobile phone to see if I could generate more funds simply by running multiple browsers (firefox, chrome, safari, etc).
Since I started I have withdrawn .0005 BTC a number of times but come to find out they aren't typically processed right away with a free account. The website says 10+ days for manual processing.
I have yet to actually have any BTC transferred into my wallet but I hope to see something soon.
Great post once again.
Thanks for the comment. How long ago did you attempt the first withdraw?