Yeah, I'm basically in the same boat as everyone else. Get about 20 notifications a day, and 98% of the time they're people sharing posts, half the time the posts they share are ridiculous and have nothing to do with their comics. I followed one for a while who shared posts 5 or more times a day, and turned their wall into a tumblr blog basically. When I first started posting my comic seeing the notifications box being filled with only people sharing posts, it was a bit of a disappointment. I even sent the Tapastic staff a suggestion to have the option to turn them off once, and they basically responded with a "Oh sorry, that isn't very important to us. ¯_(ツ)_/¯", but they did be sure to let me know that I could turn off email notifications. Wasn't surprised since it seems their main goal is ultimate reader experience, rather than creator convince, that is where all the money comes from after all.