Generally you'll go to a thread where it shows say 15 replies
but you can only see maybe 5. That means someone has you on ignore. You also can't see any sub-threads that they're part of - fuckinh idiotic setup if you ask me.
To see "ignored" people just logout and browse.
manolith will also let you know how many have you on ignore but I'd say he's probably a bit jack of that by now.

Hey R-Loon, at least we aren't ignoring each other, eh?
(Misery McUglywife an attention seeking sociopathic fuckstain., Wed 29 Aug 2012, 4:34, 1 reply)

Not in the slightest.
Actually at the moment I have no one on Ignore, though I suspect that there are those who have me on their list. *shrug* So it goes, I guess. I had a couple of people on Ignore for a time to see how it worked, and decided that I'd prefer to see the conversations rather than wonder what was being said. I can ignore the twits who irritate me on my own.
( The Resident Loon Not a demographic. Do not measure., Wed 29 Aug 2012, 4:52, closed)

*ignores*

( Monty Boyce, My cheese game is strong, Wed 29 Aug 2012, 8:26, closed)