Learn from spammers, Use skills for good
I often type super high competitive keyphrases to see which sites are rank on top of Google and other search engines. This way I could learn what Google consider top ranking sites for the phrase, as well as it gives me an opportunity to reverse engineerÂ and discover "fresh" tips and tricks for top rankings that are active today.
For example during the last month or two "discount viagra" phrase seems to consistently pull page from bebo.com among the top results. This is actual link thank ranks high for the above phrase:
While it seems that the guy used huge amount of backlinks from hijacked semi-abandoned blogs, the fact that he chosen to host his spammy page on bebo.com tells me that this portal might be a great place to host your real blog or page.
That of course if Bebo.com will take care of cleaning up their properties from weeds.