... I will just give a friendly reminder here that if you publish your link on Facebook you better already have some sort of watermark on your comic. It's good to be famous, but I have see too many good one-shot/page comic on Facebook with no watermark [or even a credit link] that got shared on 'funny facebook page' and then the page itself is the one that got all the credits. And even if you complain most of the times it won't taken down.
I know, I seems to be over reacted. But there is a chance some 'funny facebook page' will see your pages, decided to check it, found comic they like and just post one particular page, which you didn't have watermark on it.
So well, I hope you guys do get more exposure. Just to be sure that you have your comic watermarked and on position where it's hard to crop aka not on bottom.
Also, I know Facebook isn't the only one place where people post comic without permission of the owner so yeah, just want to give a friendly reminder, watermark your works before you start promoting it everywhere.