Won't it be cool to have people get a free digital copy (or a discount) of the comic they bought in print? Something like Marvel's free digital copy deal with Comixology. This system might invite people to use this site more as well.
Right now, I do this with gumroad since they have pdf stamping and promo codes. It gets tedious. I prefer not blatantly giving people pdf copies, and I like how Storylark handles the comics content so it might be a cool thing to try out.
May not be the easiest thing to implement right away though. What do guys you think?