[dheera]

Except when the people you work with IM you, and if they don't get a response within 60 seconds they get impatient, visit your desk and bother you.

[msh]

Then the problem is not the tools but the people and culture. A tool change won't fix that.

[tomjen3]

At least then they have to get up and do something physical, ie. the cost for them goes up.