Permalinks
Permalink is short for permanent link. For every post you publish to your blog, WordPress automatically creates a permalink that looks something like this:
http://wordpress.com/2006/04/20/its-hazy-here/
This link will always point to a specific post, even if you’ve blogged all kinds of new things and your old posts have moved off your blog’s homepage and into your archives. Other bloggers and sites can use your permalinks to link to a specific post of yours. Search engines also use permalinks to separately index each post on your blog.
