Here I have listed 11 types Backlinks: 1. Internal links. It can be divided into two parts: the real one designed for the readers and the virtual one created for search engines. 2. Mirror Sites links. The one with international domain name, while the other is built via free space. 3. Link Exchange. 4. self-help link. 5. Blog link. 6. Wiki link. 7. guestbook link. 8. forum link. 9. webpage directory. 10. The search results from the search engine. 11. Log quoting So how to increase the numbers of backlinks? The following are 10 ways for you to refer to:  No.1 Sumbit your site to website directories, such as DMOZ, yahoo, ODP and the like.  No.2 It would be a great way to contact with some guilds or business organizations who has higher PR to do link exchange. No. 3 Publish the press releases and add hyperlinks in their contents. You links would also be mentioned, when your pr is republished... source is: http://www.upvery.com/