html reference: https://developer.mozilla.org/en/HTML/Element

example: https://developer.mozilla.org/en/HTML/Element/body

Would be great if MDN Documentation can be read offline as pdf's, iTunes U or iBooks on smart devices or desktop.

Firefox support (SUMO) site have L10N Dashboard page:
https://support.mozilla.com/ja/kb/Localization+Dashboard
with this page we can know which page should be translated according to the page view. This is important guide line for translators.
MDN should have same feature.

MDN have many essential documents but we cannot see it offline, cannot search locally, cannot develop without network.
As Javadoc etc, MDN should prepare downloadable weekly (or monthly) snapshot zip archive of some section like xul ref/tutorial, js ref/guide, dom ref ... etc.
# actually, migration of xul ref/tutorial from xulplanet to MDN(MDC) was regression about this

I believe it will not only solve offline development problem, but also reduce daily traffic to MDN.

When I try to access html reference for an element, say select, it just redirects to the main page again. Very frustrating!

HTTPS slows down access to MDN content for now good reason.

I was referred here by a webmaster to suggest that the Developer Network include links to wikis about cross-browser client-side technologies and best-practices. Specifically, I'm representing The HTML & CSS Wiki and the JavaScript Wiki, but if Mozilla were to determine that other wiki(s) are more appropriate I expect we would migrate our content there. The URLs are:

http://htmlcss.wikia.com/

http://javascript.wikia.com/

Fix the broken source code listings

to selectively enable/disable the {embedding api / css api / javascript} search results.

on recois des mails en anglais, comment les traduire en francais
merci

And if you have to create 404 errors, at least make it a proper 404 instead of redirecting me to the front page. Consider me disappointed, Mozilla.

Whenever I visit developer.mozilla.org it always default to the French language version of the site, and I have to manually switch to English. What is the trigger and how can I get it stay on English?

It would be so great to a lot of us who want to do washups with mdn knowladge base to have access and documentation for mindtouch API interface, MDN wiki engine.
For example, sites like http://instacss.com (https://github.com/rgarcia/instacss) would't need to scrap mdn anymore!

I get the error feedback "The current password you entered is incorrect." but I just logged in with that password! And when I log out and in again, it works fine.
I wanna change my e-mail address and it won't let me!

Just like Google Code Playground - But using the Mozilla / Firefox characteristics, may only for Firefox users or available in all browsers: Live editing, experimental add-on, command line, bug tracking, and much other. It'll be great.

I know this isn't related to MDN, but to this site (but perhaps it's in your hands to switch a setting somewhere), but it would be very useful when I can see when someone added an issue or comment.