Very good article and yes, imagine scaling the expertise and save many more lifes.
Great advice. Maybe one more: "Bigger is better". It's not about the size of the community (# of members), it's about the quality of it. A few active members are better than many inactive ones.&...
Agree with #1. So why not make a profile photo mandatory? If they don't want to, they probably shouldn't be part of any true commnuity in the first place.