I have a blog about Rebol, I'm sure 99% of you never heard of this language so it's very difficult to get backlinks for it. My blog is http://reboltutorial.com I tried a service which should have registered me on some directories but I still don't see any results So how can I get backlinks ?
Huh? Are you concerned about getting relevant links? Just focus on getting links from programming sites. There are millions of them - and they are still highly relevant. Start with forums and blogs. Also a couple of good articles will definitely give you a good start. If it's such a unique niche then you can easily get ranked well by just getting some basic backlinks.
Yeah, like dadeon said, concentrage on the programming sites and forums. Most forums have "other languages" forum, make great post about "Rebol" there and you might get the attention of others who know and use the language.