Of the several shooting websites that I frequent, stirton.com and The Smallbore Journal remain my favorites. Both feature a high degree of sharing and substance mixed with occasional humorous exchanges.
Although I surf Target Talk and Benchrest Central Rimfire Forum, I find the testy personal exchanges are a significant deterrant to participating on them. Being a 'credible expert' there does not necessarily spare you from unpleasant and non-constructive replies.
The Smallbore Journal is unique in enforcing the use of your name. Even here, I sometimes learn a member's identity from context or by a reply addressing a post with their real name. Both that forum and this one require registration, have active moderators, and attract competitors who are willing to share their hard-earned discoveries. These features create environments where sharing and discussion aren't punishing experiences.
Since the subject matter is shooting, a fair amount of teasing and even some good-natured sarcasm are to be expected.