MFS is part of the multimoney group
http://www.multimoneygroup.com/It is owned and operated by Sebas Broekhof who is a long term stable owner in the PTC industry
I am a long term member of MFS. I liken it to a humble but consistent income opportunity if you know how to use it. I purchase the monthly pro offers. They cost $25 per month and give you 200 shares at the site. The pro offer usually is advertising for 20K - 25K ads
Those shares give you the opportunity to profit share from the site. I have been doing that for many years now myself to the point where I'm earning around $1.50 per day (over 15,000 shares)
That money can be spent on more advertising or cashed out. It costs you some shares to cash out but if you don't, you can cash in your earnings for advertising in perpetuity.
To put that in perspective, I am earning enough to cash in for 100K ad impressions every two months at MFS(and he does accept PTPs). This all came from investing $25 per month in pro offers which also gave me advertising at the time of purchase. I estimate it takes about three years for the ad purchase to pay you back in profit sharing. At that point your ad is free and anything else you have made is pure profit.
So if you are patient you can build an income there and get lots of advertising in the mean time