Finally, this is a work in progress (and may always be, since BMO is improving all the time). There are many stubs (indicated by italics).
= BMO vs Bugzilla =
Bugzilla is the name of the popular issue-tracking software application, used by many organizations and maintained by the Bugzilla project. Its home is at http://www.bugzilla.org. While the Bugzilla project was started by Mozilla, it is administered separately, having its own Project Lead, Assistant Project Leads, and other roles. Most of the roles are, at current, occupied by Mozilla contributors, but in the past core Bugzilla contributors have not had significant involvement in other Mozilla projects. Mozilla does provide resources, including employee time, to the Bugzilla project. The best description of Mozilla's involvement in Bugzilla is that of a steward.
BMO is an abbreviation of bugzilla.mozilla.org. It is Mozilla's site-specific Bugzilla installation, which is a slight fork of the standard Bugzilla source (or "upstream") with many extensions. At the moment, the fork is technically from Bugzilla 4.2, but many features have been backported from 4.4 and master—in fact, many features in those branches were written by the BMO developers, who added them to upstream but also backported them so they could be immediately available to BMO users. Since we've backported most fixes and features that are of particular use in BMO, we haven't been strict about keeping up with the latest official upstream release. Another difference is that the BMO devs have not prioritized deployability in BMO, since fixes and features are just pushed out each week to the BMO installation, although they have made significant progress in making BMO [[BMO/Hacking|more hackable]].
In sum, the main difference between Bugzilla and BMO is that the former is the name of the general-purpose software, and the latter Mozilla's site-specific installation. An analogue is [https://www.mediawiki.org/wiki/MediaWiki MediaWiki] versus [https://en.wikipedia.org/wiki/Main_Page Wikipedia].
=Creating a Bugzilla Account=
