Here's two examples. First, my public key: http://www.shadowscape.eu/pgp/laur
Perfectly acceptable way of sharing keys, btw, just dump them in a folder on your own website and point people to there.
Second one is what kraken is doing (was somewhere in your FAQ): https://www.kraken.com/features/security/pgp
You could scrap the page and you'll find it. Or you could expect the user to provide this instead: https://www.kraken.com/kraken.asc
Either way, it feels more user friendly.