We could start one, but I doubt any of us would go on blind dates.  Person A has a date at X time on Y date. Person B posts their willingness to help. Date goes bad? Send the text, you get a call from your friend! "Oh shit, you came in TONIGHT? I thought you weren't back until next week! I'm 30 min away, I'll pick you up".  Local friend? Show up and shitlord the fuck out of it.