Still, with Linux behind it, Git won the DVCS wars. Mercurial became an also-ran and now almost nobody uses it.
Too bad.
We'll need something new and innovative to come out and rid us of constant blogs explaining how Git works because it's too hard to understand how to make it do the things you want it to do.
I've been using Git for about 7 years now (5 exclusively) and I know how to use it, but I still have to look things up occasionally because its UI is trash and non-obvious. I didn't have that problem with Mercurial. There, I knew the verb and the built-in help was sufficient to get me where I wanted to go.
Worse is better wins again.