Some time ago I was talking to a man and during the course of our conversation I mentioned a name. He rolled his eyes and said - "Don't get me started on that guy!"
AHHHHHHHH, classic! A classic case of "avak lashon hara" [the dust of lashon hara]. Not as bad as actual lashon hara but still strictly forbidden. Another example is "I have some terrible things to tell you about that person - but I won't because it's lashon hara." A no-no.
Also, talking about who "came out of the closet" can be lashon hara [depending on the shittos of "apei tlasa"] and is CERTAINLY immodest. Why talk about someone's preferences?
שומר פיו ולשונו שומר מצרות נפשו