I have 2 sites that I like to call multi-site hosts. I would like to share them with you. The first is Profit Rally at http://www.profitrally.com/members/michaelkaer/oneatatime.html and the other is Linkscout at http://michaelkaer.linkscout.com. You can make money with these in several ways, the most obvious being directing traffic to your paying sites. I am signed up with Empowerism http://www.empowerism.com/e/93084 and SFI http://www.gomoreinfo.com/sim/8402264. There is a space where you can input your codes so you can sign up people right from the Profitrally site. SFI has been paying me a commission for quite some time and the money I have in Empowerism has increased, while getting lots of good traffic from that system.
Linkscout is a wonderful site as well, since all of this is set up for you for free. You do have to input all your information( you can't expect them to do EVERYTHING) but once it is in there, you only have to promote those two sites and you have all your sites in them. That cuts down on the costs of advertising(time or money or both)freeing you up to create still more money making sites.
In my case I have been devoting alot of time to writing books. I have 2 for sale at http://www.mjk-private-income.com called "What Money Can't Buy" and "You can make Bee's wax candles,Firestarters and Hobostove Fuelcells"
I hope you really get the potential of these sites.
Michael J. Kaer, Owner of www.2BitPixel.com
Ps. I wanted to share how you can get more traffic to both of those sites,Use Trafficswarm www.trafficswarm.com . This site has been around forever as well and has brought tons of traffic to all my sites.