the acts of "liking" a large number of someone's photos, statuses, and posts on the social network, Facebook.
Hover floving is usually as performed by a mother who misses her daughter or a desperate ex-lover hoping to rekindle a romance. The number of likes is subjective, but less than 10 is looked down upon. More than 100 is legendary.
Hover floving is like stalking, but a good thing.