bitbucket.org – Mercurial hosting

HTTP push/pull support
SSH push/pull support (with public key authentication)
Integrated flexible issue tracker
Per-repository wikis (backed by hg repositories)
Plenty of “services” for repositories, automatic issue resolving, web hooks, etc.
Email support (for both paid and free plans)
CNAME support, so you can keep the code on your own domain
Collaborate with other users easily
Source view with highlighting for many languages
Forks and Mercurial Queue (MQ) integration
A bunch of social aspects
RSS/Atom feeds for everything
Host static files on our CDN (Content Delivery Network)
(Link: bitbucket.org – Mercurial hosting)