I do, but I don't use them for hook ups.
I've recently met a guy on Grindr, who I invited out with friends last weekend and he was really nice. We are now still talking and have plans to meet up at New Years Eve, since he'll be in London for it.
I even have in my bio on Grindr "not for hook ups" yet people still message with the "Looking, can accom, you free?". Trashy people
My name is "Louder" (because of Lea Michele) and people always message - "How loud can you get?", "Oh so you want it Louder?". Of course I reply with a link to Louder's iTunes page.