Sometimes if I see a provider on Grindr, I'll send a friendly hello and a compliment on their body, handsome face, etc. No mention of hooking up -- just a friendly compliment. (I know, it's Grindr and the assumption is that everyone is trying to hook up.) If they respond with a "thank you," that tells me they are a good, courteous guy -- which increases my desire to hire them. If they don't take the time to respond, I'm unlikely to hire.