Here’s a cool paper on the impact of
IM at work: http://jcmc.indiana.edu/vol13/issue1/garrett.html
The coolness of IM has worn out on me. I have hundreds of IM contacts. I get maybe 100 IMs on an average day from 10-20 people on average. I have my IMs set to come up as minimized vs. front and center on my screen. But the lure is hard to ignore - when that window starts flashing I'm hitting Alt-Tab within seconds.
I’ve said for a while that IM is
massively disruptive for me… but what do the masses say?
Here’s a visual on the answers to a
1000 person survey:

Here are those answers segmented by
IM / non-IM users:

A lot more non-IM users strongly
agree that they rarely complete a work task without getting interrupted that
their IM-using counterparts.
A smaller group strongly disagreed
with the statement, and that group was skewed towards IM users (I’m in that
group!)
On a side note, I am now going to go through and delete all of my contacts that I haven't IM'd in a year.