Following on
from this, the 2 main problems with the "2-way Ignore" are:
1. As soon as a prolific poster ("X") puts you on Ignore with "2-way Ignore" enabled on their account (which was inexplicably the default setting when the feature was introduced, so many people may not even know it's enabled on their account), vast swathes of the forum become unreadable.
Not only do you not see prolific poster X's posts, you don't see X's posts when quoted by others either.
Whole conversations become impossible to follow, because you can only see one side of them, and you have no idea what they're responding to (or in many cases, talking about).
Under normal Ignore, posts are hidden but can be selectively un-hidden, so this problem does not occur.
But "2-way Ignore" offers no such facility - it's very much "1-way" in this respect.
If it was implemented properly (which it isn't), "2-way Ignore" would only apply if poster X has Ignored poster Y and poster Y has also Ignored poster X, with both posters also having "2-way Ignore" enabled on their accounts.
2. "2-way ignore" applies to everyone on your Ignore list, which is ludicrous.
People can be put on Ignore for lots of different reasons - they might be genuine trolls or stalkers, sure, but they might just be repetitive, irritating, or posting too often.
It makes no sense for this draconian forum setting to tar all these people with the same brush.
"2-way ignore" only works as a concept if it can be selectively applied per Ignored account - so you can switch it on for the serious bellends, but leave it off for the posters who you'd generally like to see a bit less of, but you're happy to see what they're posting about when a discussion is impossible to follow otherwise.
It's simply a flawed concept and a flawed setting as implemented here, which doesn't solve the problem it purports to solve, while creating a whole lot of collateral damage.