It seems like the Internet has the opposite effect of uniting people. By allowing people to form ever tighter communities around specific topics, it allows people to feel like they've been united closer with others, but the interests of the groups they form are narrower than pre-Internet social groups. As to whether this affects intellectuals and unintellectuals more, it's hard to say. I could definitely be swayed either way. I've observed communities that fill every square of the (intellectual, unintellectual) x (narrow interest, broad interest) matrix.