Developer reply by David Adler
Rated 5 out of 5 stars
But there's one thing that annoys me:I can only whitelist pages in the settings - why is it impossible to blacklist specific pages?
Edit: Nice! - installed it instantly and corrected my rating ^^
A blacklist feature is coming soon; in fact it's already available if you install the beta version. https://addons.mozilla.org/en-US/firefox/addon/thumbnail-zoom-plus/versions/
To create your own collections, you must have a Mozilla Add-ons account.