Depends really, but for the sites I used to access it worked perfectly. I think it all falls down to the mechanism employed by the website to protect the paid content.
This is likely of 0 use to ANYONE in this thread but:
I am an inpatient hospital nurse. When I accept a new patient to our unit it is helpful to have the room set up, including all of the equipment the patient will need. To pick out a blood pressure cuff, I need to guess how big around their arm will be. I do usually have access to their recorded height and weight, so I plug those into this and use that to guess what size or range of sizes to put in the room! This is similar, but a little more complicated to use in the same way.
I also use Power Delete Suite to constantly purge my reddit history. I'm really looking forward to the aether project which is going to just not keep anything older than 6 months by default. I wouldn't mind building an aether host server but really I live my online life from my phone and need a mobile access interface so.
Not exactly that unknown but I love mapcomplete. Cool for editing maps a bit but way better for helping me find places to work from in a new city! Especially since Google Maps seems to have gotten worse at showing anything but the highly rated coffee chains lately.