There is no limit but from my experience if you see an image incoming which 50 groups, then it can be a bit off putting - why does the user need it to be in so many groups to get it noticed?
Be confident and decisive with where you submit and after a routine is established you may find it helps improve your traffic.
Go for it! Hah. Then again I join groups and get annoyed with all the pictures (Join a comic group, get all stupid anime art) so I end up clicking off the deviations.
Devious Comments
Be confident and decisive with where you submit and after a routine is established you may find it helps improve your traffic.