The ignore list.... How do you remove people from it?

[NCG JMan]

I am sure the ignore list has a limit, but I am not sure how many can be added to that list. I put people on this list when they are being rude/annoying. I ran over someone the other day and they retort by insulting me and giving me multi tells with insults. I just laughed it off and put them on my ignore list. Well the ignore list is growing. How do you remove people from this list or see who is on the list? I am wondering if it's a toggle switch of sorts. If it is, I don't know who I have on the ignore list to "toggle" it off. I will try a few things tonight, but your input is greatly appreciated. Thanks in advance.

p.s. Sorry if this has been explained before, but I did a search and wasn't able to come up with an answer to my question.