I'm not a coder Otto. And I am not sure which plugin came first. The SimpleTags plugin I use was available ever since 09/07/2005.
Anyway, that's besides the point. The idea how it works is simply that when writing your post, you add the following:
[tags]keyword, keyword, keyword[/tags]
When you publish your post, the keyword are auto linked to Technorati.
I modified the URL in the code to instead perform a search for those keywords on my site. For example, I changed technorati.com to mydomain.com/?s= so that the keyword I link is now a search term.
However, after upgrading to 2.3, I am left with a couple of thousand posts each with unparsed code showing, quote literally:
[tags]keyword, keyword, keyword[/tags]
Where keyword is the actual keyword I had entered for that post.
My choices are to either edit every one of those posts, or run a custom query/script to delete everything after the open Tag bracket in its entirety -- neither of which is appealing, as you can imagine.