Hi Carrots,
Actually, it's commonly known as as sign of deep love and affection.
Someone did mention the salt issue on your hand, but that seemsquestionable to me because my rabbit only kisses me, which is kind ofodd because he's does care about others butnever kissesme. And the times when he does that is in our quiettimes. The other thing I considered is if he was in search ofsalt, Iwould imagine his salt ring would be more of ahit.I could be wrong.
It's also a sign of grooming, which is, again a sign of caretaking and love.
-Carolyn