Tumblr is a unique type of blog different from what we are used to. It is also a great social network with millions of users. In terms of engagement it is only second to Facebook since the visitors spend an average of 2.4 hours a month. The crowd in that site is mainly under 30.
So how does Tumblr benefit your site in terms of SEO?
The DoFollow in Links
Most big social networks out there have set their outbound links to be "nofollow" by default. Tumblr does not do that. This means when you post links from your blog on a Tumblr blog you get "link juice" which is a big plus when it comes to PageRank.
Backlinks from Tumblr have a perk. Tumblr users have the ability to reblog your content. For example you do a nice post which gets reblogged 200 times, that's 200 dofollow links created to your site NATURALLY.
You should use Tumblr more often and create a following. This can be a means for alternative amount of traffic. People will need to gain some kind of benefit from your material before you see bigger SEO benefits from Tumblr.
There are various types of content you can post on Tumblr that appeal to the masses there but the more your content stands out the higher the chances of your profile going viral.
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