The same as always... share-worthy content that viewers/visitors find fascinating, interesting, useful or funny.
If we want to be boring: people these days really like reading quality stuff. Simply having legible and grammatically correct articles impresses readers, and that's sad, but it works. To be more exciting: Videos. As long as the video isn't uploaded to a site with a bunch of ads and scripts that make watching difficult, videos pretty much allow you to post what you want where you want as much as you want. It will be interesting to see in a few years when video marketing hits a critical mass, how Youtube videos will rank in SERP. If the abuse continues, I hope Youtube loses PR.
I think certainly a good start but a shame to leave out the social signals as I think that is much more exciting and certainly a large bunch of links being built that should be tracked. One interesting would be the insight around the content of the topics and if more advanced statistically focused topics outperformed 101 guides.
You can use social platforms to engage your customers and get valuable visitors as well as links from there... Other than that you can create quality contents in terms of articles/videos/documents and share them across the network.. Also, you can publish them on High Authority sites..
Of course, the content should have quality and it should be fresh and you should publish your content on top article directories, blogs, web 2.0, forums etc.
In addition to the suggestions above, you might find this thread helpful too: [h=3]Link Diversity for time-proof Link Building[/h]
From our experience of writing plenty of content and seeing what kind of content gets links, I can tell you that the following points are some factors: * An attractive/catchy headline for your post * By adding visuals like lists, images or tables can help attract more links * Articles which are well researched and summarize the key points in a list format, e.g. "Top 10 Ways to .... ", "How to Get .... " * Posts with videos tend to attract more links * Longer posts, at least for us, seem to get more links than the shorter posts - typically 700+ words These are just some of the factors we've seen that influence the ability of a blog to attract links to its' posts. However, all that said, its important to realise that your content will not attract links however well written it is if it's not promoted and not seen by a fairly large number of people - it takes a lot of pageviews to convert potential readers into remembering to talk/mention your post in their article [if at all they own a blog].