post number 3 what about mutlitple domains

I am researching the best way to agregate alot of domains onto one site.
It seems that my www.shadowvote.org site just will not get indexed by google. I think this is because its points to a subdomain on my www.opensourcecomputer.com website which is hosted by yahoo. I would like to be able to have 10-20 domains all hosted by one service under one account, say at bluehost.com. Maybe have 20 tabs at the top of the page with one domain going to each. Then have each built up at its own pace and be able to be spun off at any time. So for example I could have a friend do their site and point to a tab, be indexed by the search engines and later if say in the case of a blog that becomes popular (making money) and that friend then wants to move to domain and site for them to be able to do it easily.

Any one know how to do this?