SEO Tricks and Tactics
The subtleties of Search Engine Optimization (SEO) can be somewhat of an "Oh Ya", that makes sense, but unless you specifically throught about it, or were told about it, you would probably never think about it.

Keyword Selection for SEO
Each Page Should Represent 1 major keyword and up to two additional supporting keywords.  Then page should then base all its content around these SEO keywords.  Once you decided what your keywords are, you can start to create your pages content with Search Engine Optimization in mind.  The idea is to get your keyword placed in the page in as many spots as possible.

Using Anchors to Increase Keyword Saturation
Here is a neat little trick that I just learned to increase your keywords saturation.  Provide anchors on the page to link to certain locations on the page, but instead of just using an anchor with a name of top, use a name that is one of your keywords.

Anchors are created using the A tag:
<a name="keyword">
Now you can provide a link at the bottom of your page back to the top using your keyword once again.
<a href="#keyword">Back to Using Keywords</a>

Pretty tricky huh?

Create Dynamic Meta tags
Probably the best thing that you can do to make your site more search engine friendly is to use specific meta tags for each page on your site.  Many web designers just create one header and copy it across all of their pages.  I cannot stress how big of a mistake this is.  Your header, including title description and keywords, should be taylored to best represent what's on each page of your site.  One of the largest ranking factors for the search engines is your site title.  This is the text between:
Also very important is the description meta.  The description should let the user know what is contained on the page.  This is the text that will show up in the search engines, so it is important it be clever here from a marketing stand point as well as from a technical stand point.  This is the text contained in:
<meta name="description" content="Your great description here" />