About 450 in my blacklist. I think i’ve blacklisted more than that but when the profiles disappear I think they go from the blackliśt also.
I’ll blacklist anyone who I simply don’t want to see in my search results - that could be for offering bareback (most common reason), could be I find them hideously unattractive so would never see, and in a few cases they are people I have seen but had a bad experience and don’t want to be reminded of them.
I only remember once where I was conscious that it had been useful. I was running an RB and a girl replied who I was interested in seeing - profile looked good and no obvious warning signs, and I was on the point of booking her, but I found it odd that she didn’t show up in any of my own AW searches (until I included blacklisted profiles, when she appeared). Given that it was a fairly new profile and there was nothing else to put me off, it was a reasonable bet that I had noticed her profile before and blacklisted her because she had at that point been offering bareback.