So, question for the masses. In bands that I've been in before, I've always found it acceptable and even worthwhile to "work the crowd" between sets, chatting with them a bit and finally asking "So, did you like the band? Could I interest you in signing up for our email newsletter?" I'd regularly get 10-20 email addresses a night. The "newsletters" (really just pimping out our upcoming next show) would definitely have explicit instructions at the top as far as unsubscribing ("Reply with "unsubscribe", and you're out!", or something equally simple), and certainly while a large number of people wouldn't spontaneously turn up, we were regularly getting 10-20 "extra" fans showing up at each show. Talking with them, they always cited the mailings as the reason why they turned up. Now, with this latest band I'm in, I talked with the bandleader about doing the same thing, i.e. actively soliciting email addresses directly from the crowd between sets. He was pretty much set against it, citing that people would write down fake email addresses, work email addresses that would never get to the person, and that the whole process was generally a waste of time and tended to annoy people, to the detriment of the band. His preferred method is to just leave the signup sheet in some easily-accessible place, and exhort the audience to sign up "on their own", that way our list gets more "interested" people who would be more likely to come to shows. My question(s) for the group is, do you think his concerns are valid? Won't my method, while it may net more "uninterested" people, get more butts-in-seats for our shows just purely by statistical aggregation? I always justified my "direct" method with "Well, there's always explicit instructions on unsubscribing if it's *really* a bother to them", so I never really worried about it too much. What's worked best for you guys in the past?