Yup, a link back to your website. To be of direct benefit to SEO a backlink can’t be a “nofollow” link. Many websites link to external sites using the nofollow link attribute to preserve link juice (although the effectiveness of this is questionable), and this basically instructs search engines to not give your website any benefit via the link.
OK this is probably a completely obvious question but I find a lot of this SEO and website business goes right over my head, so I have to ask as I’m sure I’m not alone…! *blush*
In words of one syllable so that the ignorant among us can understand: what is a back link?
Is it simply a link to your website from somewhere else (i.e. my sig on this post)?
Yes… a back link is when a site sends a link back to 1 page on your site.
You also can have back links from your own pages in your site to other pages of your website (they also count for SEO obviously).
You can create back links by doing any of these link building strategies
Sponsoring Events or Contests
Forum Signatures and Forum Posting
Now, keep in mind not all the backlinks are the same. 1 high quality Backlink can be worth more than 200000 low level backlinks.
So to explain it quickly: If you sell “cheap telescopes” and tomorrow the guys in NASA write and article about how to buy a cheap telescope and link back to your website … THAT link is worth… mmm more than 50000 low quality back links .