Just came accross a great company by the name - SEO 2.0 who are really good at the seo services they provide. Good link building is done by their efficient staff and they even take up bulk orders.

If your site is related to lawyers or something more specific like police misconduct lawyers they will help you with relevant link building. Relevant linking is the most beneficial to your site and is the best.

Links from sites not based on your sites is not something you should be looking for.

Link building can get tricky and you must take care that the techniques you are using are the latest. If you are going with old school then whatever you do is unlikely to work.

For example, if you are looking to market a volcano vaporizer site, then it is best if you start linking to related sites.

Secondly, you can join a Linking Exchange site, such as Link Exchange or Got Links, but it is best to exchange with related sites.