I'd say "Not really" since there are some people who just aren't good at art at all, and I believe they should have as much of a right to this site as we do--there's plenty of room!
However, I WOULD get suspicious of people who fave a bunch of stuff in the, say, "artistic nude" category just to get free porn, and have nothing here. But since you don't post those kinds of pictures, that's probably beside your point...
I never bother to thank the deviant if all they have is a favs gallery full of naked women and they fav some of my nude work, although I am a bit suspicious of those who fav but have no galleries...it's a bit weird because this is an art community website where we share our work!
Yes it dose even thou no one has done it to meyet but i can help but wounder when i see there profile's on hear are thay just going a round adding work to there s that thay can rob it and call it there own on post in on the net some where.
It suck when people rob work form other people and call it there cause thay don't understand how much work the artiest has put in to it.
Even thou it hasint happen to me but i know people how it has happend to and i have all so see work belonging to people from hear on other site's wicth just suck's.
It doesn't really bother me because I have a friend who joined DA in order to watch other people's qork, because he can't do anything himself (or he says so anyway). But I do think it depends on the quantity of favourites and what the deviation is about. It would worry me more if it was a photo of myself that they were favouriting and I didn't know them.