One thing not mentioned yet, which is very important for
SEO benefits is to use good Title Tags (the words inside of the <title> and </title> inside of the <head> part of your html). It is what is displayed in the topmost bar of your browser. Most sites and most site templates put the name of the website first, followed by the page name. This is ok, but you actually get more value out of having a keyword specific title, followed by your website (you can see this at work on this site). As mentioned earlier, the All-In-One-
SEO plugin for wordpress will do this for you as well as allow you to customize how your title tags are displayed if you feel like testing.
Which brings me to my next point, Testing!!! It's every marketers favorite thing
And it's the most valuable thing you can do for your website. Never be content with what you have done, always continue to test and tweak your site and look at your results. If they are good, awesome. If they are bad, put it back or try something else.