I haven't really touched it since (though I get about 3 emails a month about it). Just a small update here and there.
This morning, with all of the JSON Feed hubbub going on, I decided to recreate that same simple script to parse JSON Feed rather than RSS. I also updated to the latest release of the PHP Twitter OAuth class by Tijs Verkoyen.
This took me mere minutes thanks to JSON Feed being much easier to deal with.