Encourage Lynn to continue being an advocate for their beliefs and to continue adding valuable information to discussions, but suggest the possibility of exploring other topics as well. Also advise them not to take criticisms too personally in online forums.
lynn, can't have a thin skin here in these dumb forums. i think it happens when someone is singularly vocal on one particular issue.  B carfree gets smoke blown at him also... never stop advocating for what you believe. never stop adding info to a story.  maybe branch out a bit...whatever.