I didn't know that about the add-ons, though, gotta look into that.
Shameless Plug-INs
I’ll make a shameless plug for a couple other useful, free plug-ins
First, WOT (Web of Trust)
WOT is a crowd sourced rating system for the “safety” of a website, rating each site for both spam and content reliability. I particularly like the feature that tells me when I have previously rated a website. Thus if I have found a site dubious in the past, I will be reminded of that when I go to the site.
Second, Rbutr
I was just reminded of this plug-in with Croguet_Player’s comments on the children-endangered-by-puberty-blockers-medical-experts-warn article.
I used to use this plug-in and contributed rebuttals on a regular basis. Lately I have not been contributing and it looks like activity has fallen off. A real shame, a year ago the tool was getting 20-odd new rebuttals per day. Now it seems only a few per week. Still it is a useful cross-check when an article doesn't seem to ring true.