I don't think I've ever stopped to read an untitled fic. Titles are so important! They're almost always the first impression you get of a story. I almost always try and title my artwork as well, because while I like that people can get different vibes from an image it's nice sometimes to give them a place to start or a tiny peek into my interpretation of a pic.

I try and title my fics with either some short line that may be important to the story/emotions, or by using a few words of song lyrics that I either associate with or inspired me to write. I don't like using song titles, as I don't write songfics and that's what I associate them with.

I'm never really concerned about sharing a fic title, probably because to my knowledge I've never personally had it happen in the same fandom anyway. It can be slightly confusing when it comes to other people's stories, but it never bothers me.