Question: Where can I find a good Eclipse Mercurial Plugin?

Answer: 
Now that **Bitbucket is dead**, the new location of *MercurialEclipse* is:

* <https://foss.heptapod.net/mercurial/mercurialeclipse/-/wikis/home>

And the update site is:

* <https://foss.heptapod.net/mercurial/mercurialeclipse-updatesite/-/raw/branch/default/p2>
Here is the web-site: <http://www.vectrace.com/mercurialeclipse/>  

The update site is: <http://www.vectrace.com/eclipse-update/>