I believe the correct word is "shill", but who would be paying him as a shill for GM, and to what end? This is a discussion room where there are endless postings describing problems with GM cars, as well as solutions to said problems, i.e. suggestions, repair procedures, sites, etc. Paying someone to post bullshit statistics and etc wouldn't be productive--there are too many in this room to rebut them if they're not true. They wouldn't stand.