Is it grammatically correct to say
"One of the disadvantages of chatrooms is that you do not know the people with whom you are talking"?
I think it is better to say "the people you are talking with" but I do not know if the first option would be possible.
Pronoun
+be
is almost always contracted in speech. And often in chat rooms, where the contractions often surface as unapostrophicated Im, im, your, youre, hes, shes, were, there, theyre, their. Clearly leading inevitably to the breakdown of Western Civilization.