Used to be great but degraded to useless. When I began to use it years ago it worked and actually blocked elements. Now, I block an element, but it comes back. I re-block it, and it comes back. I reload the page, and it is gone... until I re-visit the page by normal browsing, and the element appears again. And I am specifically not talking about elements with randomly-generated name/ID tags! I am talking about the exact same element with the same ID.
This addon has become infuriating: it does not block that which I want blocked but it blocks that I want to not be blocked. It is an unmanageable mess now. I have to turn it off completely on Monster, LinkedIn, and a growing list of sites because it completely breaks them, without any blocking set up for them.
This and the lack of wilcards! Wildcards in Javascript DOM regex CSS whatever format that require programming language skills do not cut it! We are not programmers - we are ordinary people bombarded with deluge of spam ads. We want these ads gone, with reasonable effort. If we are required to write CSS regex to get rid of an annoyance then why do you develop this software???