What happens to Facebook messages when you delete someone?

[Evangeline]

If you delete someone on Facebook will your messages disappear? Or will they stay there and you can read them whenever you want? Also, how come when I like a fan page, it stays there for a few days and then it says that I didn't become a fan or "like" the page?
PS. does anyone else find it stupid that you can now "like" a comment?

[Harry]

I cant help you with the first section.
But as for the P.S. yeah, just a tad. I also find it stupid that I see only fan oages, and not status updates.

[Housewife]

Yes you can still read the messages, and if you block them you still can aswell, but their name and pic will be gone.
Dunno about your fanpage thing.
I like that you can 'like' comments.

[i124Q ;)]

Sorry I'm not sure about the message-thing, but I THINK that they should stay there (not 100% sure though). And the liking a page part, I really don't know why that's happening, it doesn't happen to me..

And yeah, it's kind of useless to like a comment, I mean, come on..