While reading google+ this morning, Caroline Pointer had a link to this article. It's really good and has some great ideas for all of us. Thank you, Caroline, for posting this link.
Thomas MacEntee wrote "How To Collaborate With Other Genealogists" and this article was posted on September 23, 2011. The link is below. Thomas, thank you for a well-written article with some really good suggestions.
I'm going to mention this to some other genealogists. If we all made an effort to follow even half of these suggestions, our community would expand and we may get through even more of our "brick walls."