Random people I don't know favoriting my work.
Sounds weird, but hear me out. Every time I get feedback I get excited to see if someone commented and what they said. Most of the time it's just a 'insertnamehere added submissiontitlehere to their favorites' message, which is usually fine, though most of the people that favorite my stuff is just looking for attention or for me to follow them. I know this because I look at their profile and favorites and none of it has anything to do with what I draw. In fact, most of their favorites are literally from numerous other people, regardless of whether or not they're good at art. This can only mean that these people literally spending so much time on the main DA page on a favoriting spree. And I thought I had no life.
I've also noticed the same kinda thing with llamas. I get llamas from random people I in no other matter would've noticed them.
So to this, I've decided whenever someone does this again, I will ask them to unfavorite whatever they added to their favorites.