I've been active on this site for almost two years now and have used it to get help, learn stuff and assist others.
mechanics.SE is by no means the first website on automotive maintenance and I doubt it'll be the last.
But there's something about it that makes it so... unique.
I've been trying to put my finger on what makes this site so different from the rest.
So, according to you, what is this site's unique selling proposition?
I'll post my thoughts in an answer as well.