onepointone - 5:52 am on Mar 1, 2010 (gmt 0)
Even if the links you gain are valuable, seo wise, you have to consider how they are gained. Otherwise you might see this when you check your site in the serps...
'yoursite.com spammed me'
'yoursite.com conned me'
'I can't believe 'yoursite.com said this!' (linkbait)