There are many methods for building links.Directory Submission,Blog Commenting,Directory Submission,Link Exchange etc
yeah, I suggest you get quality links. Links that are from sites that are related to your niche. Forum posting is one of the way to gather links.
First follow the rules, check out Google webmaster guidelines and keep in mind of building links naturally, don't boost it... or you will get the other result...
The problem is a website with good high Google page rank will not link to your site unless your have a quality content related to them.
I will say do blog commenting .If you post comments on blogs related to your niche than you will get quality baclinks as well as good traffic also related to your niche .
I think the easiest, free and legit way to get high quality and natural links is to write excellent, useful, information rich content and add it in your site. People finding that content useful will link to your site for free.
Here's the problem with link building though, a lot of the "good quality people-wanna-link-to" information is already written about in great length. So it's pretty difficult, like for example my site, to become popular through just hits. Because people can find it everywhere. It's difficult to be unique in my niche.
You should have a link building plan. You can do directory submission, social bookmarking etc. But have a plan of investing an hour a day like that. Do not build links very fast it may be taken by spiders as spam.
There are many ways to get back links. For me the most effective has been article submission. You can also comment on blogs, post in forums request link exchanges with other related sites.
I agree.. Posting to related forums and blogs. Submit articles. social Bookmarking sites. Do not use automated systems. When you get to the top you want just quality. Post videos for traffic this might help people link. Put free resources on your site for link baiting.
I think you should look for do follow forums which have the same niche as you are. And also blog commenting in do follow blogs is also a good source of backlinks