Indexing the right things
Just a little FYI if you're running a blog site. You might want to limit the web search engines so that they only index your blog archives rather than your blog's index page.
I noticed after setting up my blog that I was getting a lot of hits from people searching for specific things but they were coming to the home page instead of the archived page where the content sits permanently. You see, more often than not, that content has already fallen off the main page, so it's better for them to find the data in the archive.
Here's an example: say you're searching for "brad choate trillian" using Google. Well, without restrictions, Google would have probably shown a match for that at www.bradchoate.com/index.php-- but chances are that the post I had made about Trillian would probably be in the archives already.
The solution to the problem is tell the search engines to not index your dynamic blog page, but to still follow links on the page and index them. Here's how you do it-- just place this within the <HEAD> portion of your HTML:
<meta name="robots" content="noindex, follow" />
That little rule will keep those search engines from indexing the wrong thing. If you tried that search for "brad choate trillian", you'd find that the match for it is in my archive directory as it should.
For more information about this meta tag, visit robotstxt.org.