What a handy set of tools! I was eager to try anything that made PBP easier, and this helps so much. Better yet, the author keeps it up-to-date and the source is available on Github for auditing and modifying and sharing. It just doesn't get better than this!
I love this add-on. I use the Paizo site every day as "Tarondor" and "GM Tarondor" and this helps me track which games need my attention and most importantly, automatically sign me in as the correct character for that campaign. I'd like the Paizo experience far less without it!
I haven't tried the blacklist feature yet but the overall enhancements to the campaign page are great. Especially if you're running multiple campaigns, the new formatting and highlighting makes it much easier to see what's been updated. Get Gary to make this the official format, then we won't need a plugin!