Don't shelve. Share.
Join the relay! @comicrelay
First, follow @comicrelay on twitter.
Next, tweet the comics you'd like to share, using the hashtag #comicrelay.
The @comicrelay account will retweet you.
Then, someone interested in your comics will reach out to you, at which point it is up to you and them to arrange for shipping.
When they're done reading your comics, they'll relay them to someone new.