If you are interested in writing blog posts for GHC, you will have to tag each post appropriately and determine the custom URL for an RSS feed with only those posts. Luckily, if you use one of the more popular blogging services, this should be pretty simple.
The tag you want to use will include ghc plus the year of the conference. For instance, in 2011, it will be ghc11. You can add other tags to your post as desired; just make sure to include this one as well.
If you use Blogger, you can get the URL by adding a little bit extra to the end of your RSS feed. The format for the feed is as follows:
If you use Wordpress, all you have to do is add "feed" to the end of any category or tag link. For example:
On Tumblr, you can simply add "rss" to the end of a tag link:
Terri Oda wrote about how you can set up your feed for Dreamwidth, an independent, open-source community-centric service (if you haven't heard of it, check it out!). Here are the templates for your tagged posts:
Finally, on Posterous, you would add the tag info to the RSS URL like this:
If your blog has a custom setup, or isn't one of those mentioned above, then you'll have to do some Google-fu to figure out how to set up your feed. If you get stuck, try leaving a comment, and hopefully someone will be able to help you out.