My family is from Liverpool, so I have some of those vowel sounds, I've got the slack tone of someone from Birmingham, and then I was raised in Bedford, which is just north of London. So my accent, if it's possible, makes even less sense to a Brit than to an American.
The time you do get edgy and the time you do want to slack off is the time, boom, there goes your opportunity. So you don't want to have that.
The social use of Slack does drive awareness - it's a good thing for us.