I'd say hell yeah... on Facebook it seems to be the new way of adding bragging adjectives to your posts. Got me to wondering about just how far that hashtag transcends the web. I once thought it was strictly a Twitter thing, then came to believe it was just a way to call out search terms that would somehow be searchable web-wide. Looks like I was part wrong and part right - they work even better at places like Instagram, Tumblr, etc. A good take on it can be found here.
#hashtagfreak #learnsomethingneweveryday #hashtagmuch