Sites like Xomba are very interesting to me. Let's say you have a website, and it sells Cell Phone accessories. You could feasibly promote it very well on sites like Xomba, and you could make a little extra while doing it. So this is what I was thinking.

1. Create your site (selling CellPhone Accessories).
2. Post on Xomba and link back to your site.
3. Post on other sites like Snipsly and Squidoo also linking in to your site.
4. Now that you have built some links, you could create a hub page all about your site.
5. Then you could write on sites like Xomba, etc. all about your hub page (which links to your site).

Of course you could continue to write all of the articles, promote them on facebook and twitter, and gain even further traffic. The main goal here would be to ultimately drive traffic to your site which sells the cell phone accessories. But you could gain some ad sales from Xomba and Snipsly, and you could even earn some affiliate sales on Squidoo and Hub Pages.

But here is an even more interesting idea that someone mentioned to me the other day. You could hire a Virtual assistant to do almost all of this for you. And they could even tweet about what they have created. Thereby, literally outsourcing the network that you are building. It really is a tangled web and you can make all the parts of the puzzle (Like Xomba) work toward greater ultimate goals.

Be sure and avoid linking Xomba articles to one another as this is a specific violation of their TOS.