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43. Be a link monkey. Webmasters want people to link to them. It makes them feel loved. And it helps them rank higher with search engines. But they don't have the time to go begging. You do that for them and get paid per link. If you're smart you'll find shortcuts and charge people a lot of money for identifying and approaching possible link "partners".

44. Related to the link idea above - start a directory submission service. There are lots of directories around like the ODP. Many take free submissions but you have to do these by hand. When you're familiar with the submission process at a few of the top ones it takes you a lot less time to make submissions. Webmasters have to register, wait for a reply, jump through other hoops etc. They'd rather outsource it to someone who can do it faster and has the time.

45. Another flavour of link-building: Dropping mention of your client's site in forums, blog comments etc. Yes, clients pay for it. There are spamming ways of doing it and some more decent ways. If you can make relevant posts, posts that contribute to the discussion, and provide only those links that are beneficial to that thread, you'll be in high demand with webmasters looking to spread the word about their good content. For example, if you genuinely feel that this list of 101 ways to make money is the dog's testicles - and you participate a lot in webmaster forums - you're bound to come across threads where dropping a link would help your forum mates. Some website owners pay for that.

46. Press release websites often need people to screen user submitted releases for profanity etc., before running the "news". Well known blogs often require the same kind of vetting service for user submitted comments to blog articles. Niche directories that take automated submissions need to prevent against SPAM so could use a human review of each submission. There are numerous such opportunities. Spamming site owners with offers of your service may not get you anywhere. The key is to identify a site that looks like it could use this service and make a personal approach.