First we should talk a little about the importance of nofollow links. Though less people consider these links important, they must be a part of anyone’s link building campaign while it will look more natural in search engines’ eyes. Second, even though nofollow does not pass PR, we all know the page rank is less important these days and anything that can help our rankings is way better than a higher PR.
Let’s first start with blog comments. The opinions on this subject vary from people that do not trust in links from blog comments to those that rely on blog comments for their whole link building campaign. Blog comments are not only good for links but also if one shares thoughtful comments that contribute to a post the chances of becoming an authority in his niche is higher. Related to blog comments, another great debate is whether .edu and .gov links carry more weight than regular .com and others. While Matt Cutts claims Google values .edu and .gov links as regular links, it is better to have its than not. Going further, finding related .edu blogs that you can make a comment on is easier when using advanced Google queries like site :.edu « niche » blog like for example site :.edu golf clubs blog. But again, do not spam your link on those blogs but only share what you think on that subject and bring value to the post you comment on.
Another great way for gaining links and exposure are RSS Feed Directories. Whenever a blog post is added a new link in added also in the Feed Directories you have listed your feed to. Moreover, there are even social networks that allow adding feeds, such as MyBlogLog, Squidoo and so on. There are literally thousands of Feed Directories available, easy find for anyone doing a Google search.
Social bookmarking is also a good method for gaining links and getting a new website indexed quite fast. Moreover, creating a mind-blowing post that gets thousands of diggs for example will get you not only a handful of new visitors but also the desired backlinks.
Press releases and article marketing, although they will not get so many value links its cannot be left aside while it is all about exposure. More than that, a well written press release that catches media attention could get syndicated in thousands of other places, meaning not only thousands of links but also visitors interested to find more about your company/services/blog.
Link Baiting is like any webmaster’s Nirvana, is what SEO gurus promote and what Matt Cutts says is best for getting quality links. A great method for creating link bait is by creating a contest or a giveaway, let’s say person that gets the most re-tweets wins the prize. You will get an incredible exposure in the online communities.
Of course there are many other ways of getting backlinks however these are quite popular among webmasters nowadays and also they are not so time consuming as let’s say creating a detailed report about something related to your niche that gets links while it worth that. That does not mean one should not use each and any methods available while diversity is best when doing a link building campaign.