I have a handful of paying clients, but like anyone in SEO, I get my share of rejections or people who show interest and then won't follow up. So, just now, my wife was scheduling a spa appointment for us, and I thought, 'Hmmm...wonder if they do any SEO?' THEN I thought, 'Wonder if I could offer SEO to businesses in return for goods/services?' Like, 'I'll do SEO for your site in return for a free meal at your restaurant every week.' Meanwhile, I wouldn't go crazy, maybe build a few backlinks and social bookmarks for them here and there. It seems like a way to still get paid by people who wouldn't otherwise pay for SEO. I believe our ancestors called this concept 'bartering'.