How on earth do I promote/market my social media website?

Question From User - Answers in Comments.

Hi guys

I have adopted the Million Dollar Homepage model to use for social media, micro-advertising - http://www.becomethebrand.com

So what I mean is that if you twitter or flickr, you can get very cheap advertising on a virtual billboard.

The question is how do I get people to visit my site (especially as the first 100 visitors get free advertising)?

Should I start a blog, buy google ads, comment on high-volume blogs, use squidoo, get a facebook page, try and get someone to write an article, go on forums, use YouTube more (http://www.youtube.com/user/soplon313)?

Any thoughts would be great!!!

Thanks,

London guy