look up any word, like plopping:
 
1.
To keep tabs on someone is to make a conscience effort to know what that person is doing. Often, the person does not know that you are keeping tabs on them. Typically it isn't as drastic as stalking the person, but it could be.
I always keep tabs on my EXes via Facebook to see what they're up to.
by macalish July 30, 2008