I'm thinking instead of buying GSA Indexer, GSA SER should be able to do the backlinking itself. I'm thinking hitting all pages that exists (and likely indexed) - not creating new. That means blogs, guestbooks etc. just like many of you. But are they actually the best? How about the indexer, referrer links? Aren't they some of the kind of sites that SEO indexer hits?
Basicly - what is the best practice for getting your tiers indexed?