I'm also curious if there's a pattern between introverts and extroverts when it comes to info-overload like this. Assuming spam isn't a problem, an extrovert may enjoy interacting constantly online, with many many different people, over the course of a day. An introvert may be the exact opposite. This would correlate well with "offline" introvert/extrovert behavior.
So the term "information overload" would have a different meaning for an extrovert and an introvert. For the former, it would be spam, or unwanted conversations. For the latter, just too many conversations which have little obvious value (small talk, etc...).
I've not seen any studies comparing introverts-to-extroverts when it comes to online information usage patterns (if anyone knows of one, please post it! :) ). So I'm totally theorizing here without any data.
I've always found it a good distinction
Ah, back to the good ol' days of