Was this edinborough guy banned or something? Because there is another person who posted the comic in the comic plugging thread, and it was their first post.
Also, dude, they are giving you constructive criticism (albeit not in the most polite way) to try and help you make your comic something other than one of the masses of shitty webcomics available. If you post a link to your work on a (webcomic's) forum, be prepared for people to say something about it. Don't expect people to say "oh wow, it's great!" just because you show it off. All you're doing by reacting the way you are doing is coming off as an areshole, saying "well I'm the one who made the comic, so your opinions are all worthless" isn't going to make us treat you any better. Maybe take some of the advice, like tomselleck's stuff about your writing (he's part of a really good webcomic, so it's not like he's talking out of his arse here) and who knows what will come about!
Also guys, don't be dicks. The thread was pretty pointless, sure, but you didn't have to be so hostile and rude. Telling him (her?) to go away straight away without anything constructive is a dick move. How would you like it if people did the same to you?