For the forward thinkers among you, the movers and shakers, and those with the social media bent – you might consider trying out Storify. Perhaps it will expose your comic to new readers since it is so new.
Another thing to try would be to ask your readers for specific feedback, like this. I don’t normally see much value in anyone vaguely asking “How can I make this comic better?” However – if you ask specific things, you might get useful feedback.
I’m also trying out PostRank and I’ll let you know if I find it tells you anything useful. Interestingly, it was just bought out so it must be doing something worthwhile.
The Pentagon is using comics for therapy. Soldiers returning from war are encouraged to share their stories in comic form. I imagine that soldiers seeing one another’s stories might get some comfort from the knowing that others also felt horrors of war. Comics are very approachable and safe for something like this, don’t you think?