This thread has some relevant details about how to approach people:
viewtopic.php?f=23&t=397It's possible that casting your net wide isn't the best strategy, instead it may be best to target those who are more susceptible to the message. One calculation to consider is that if you get someone to realize the many good reasons to give effectively, they will likely do so for life (see Giving What We Can); if that is the end result, even 20 hours of conversations with that one person isn't too much.
I joined GWWC after I spoke with Nick Beckstead; by then I was already giving, but it wasn't targeted to the most effective charities, nor was I doing it consistently. Even if I would have eventually gotten to be a GWWC member, it would have been probably a few years later (that's several years of donations that wouldn't have been made). It took Nick about an hour lunch and maybe one follow-up. He knew I had utilitarian tendencies, I was a good candidate
Possible lesson: find those who seem receptive. I've talked to my group of friends several times, I'v been vocal and public on Facebook about what I do. Results? Not so much, though I may have influenced a friend who earns a lot of money to consider the effectiveness of charities he gives to more. I've had several friends contact me about philanthropy issues because they see me as the best expert they can find.
Facebook posts about these issues are useful I think - it's hard to gauge how many of your friends read them, but I'm confident it's worth the effort (5 seconds to share a link). Join GWWC on Facebook (
https://www.facebook.com/pages/Giving-W ... 3552416275 ;
https://www.facebook.com/GivingWhatWeCanRutgers?ref=ts ;
https://www.facebook.com/groups/211230665569698/ ; etc) for links you could re-share with 1 click