“Technorati Tagging” in WordPress 2.0

I’ve been using the “Technorati Tagging” plugin developed by Benedict O’Neill (the second plugin with that name listed under Plugins/Technorati), so I have a large number of articles with a “technorati” custom field populated with a comma-separated list. I recently upgraded to WordPress 2.0, and as such, there are some problems with the plugin; primarily, my cloud which once linked to /tag/WhateverMyTagWas to display a list of all the articles with that tag, now simply displays a list of all articles, regardless of tag. Still pings Technorati with the tags, so that still works, and I really don’t want to have to go back through all my old articles and retag them. I’m guessing this has to do with 2.0’s new aliasing system, which I tried to mess around with but ultimately gave up on.

So what should I do? Benedict O’Neill doesn’t seem to be interested in supporting this anymore–the link on the plugin page goes to a 404 on his site now. How much trouble would it be to switch out a better supported plugin, like Bunny’s Technorati Tags? Would I lose a lot of functionality that way? Would I need to retag? Should I jump right into the code and try to upgrade O’Neill’s plugin to 2.0?