That's great!
I actually use reddits a lot to help promote my webcomic and have received nothing but positive from the reddits community. People are really nice, and have given me great constructive feedback instead of trolling, and actually reddits is my largest source of viewers getting me upwards of 500 page views in a day.
Some other great subreddits are /r/webcomics, /r/narrativecomics, /r/comics. These subreddits are made to help self-promoters, so people are a lot nicer when it comes to that.
Give it another chance if you'd like.