[guitarnick]

In half jest, how do you feel about "Slack" then? One can argue it makes the product more memorable.

[AnIdiotOnTheNet]

I don't use Slack, but from what I gather it's general slowness and the way it aids constant distraction means it is a pretty good productivity killer, so calling it 'Slack' is actually Truth in Television.

[mobilefriendly]

"Slack" has multiple meanings including nautical-- adding or cutting slack into a line, which gives it capability to do more...

[kazinator]

It's an aptly-named productivity distractor.

[rbanffy]

Just like actual slack, it makes people less productive. Without the creative benefit of slacking. ;-)