Planet13 - 5:04 pm on May 12, 2011 (gmt 0)
Matt Cutts has said it time and time again; Have content that is so good that people will WANT to link to you naturally, and you won't have to ask for links.
If you can't have content that is GREAT, then maybe you can have content that is at least controversial, provocative, funny, or creates an empathy response (like sites that donate / raise funds for worthwhile causes).
Another idea is cyber celebrity promotion; I hear that the Kardashian's of the world get paid big dollars to tweet about restaurants they are going to or stores they are shopping in, and because they have so many followers, other people will visit those sites and might end up linking to them as well.
Maybe you can't hire a model to tweet about your products, but maybe you can find someone who is about to do something very courageous / dumb so they can promote themselves by writing a book about it later. If you can, then see about getting them to blog on your site or pay them to tweet up your services.
The popularity of reality television and the advent of social media has REALLY changed the whole way to leverage content. I think we really have to take a fresh approach at how we generate a buzz about our sites.