We are always looking for more people to test patches, find and fix bugs, and help clarify issue reports on our bug tracker. Do not hesitate to join us.

should be great for having few links to the JDoc explaining the how to contribute.
(https://docs.joomla.org/Testing_Joomla!_patches this one or the cat?)

The Joomla! Issue Tracker is constantly improved and is now multilingual. Translations are done via our translation tool Crowdin and merged (nearly) automatically here.

a link "you can help to translate" to: https://crowdin.com/project/joomla-official-sites ?

How is the Issue Tracker powered?

You should definitely include GitHub here. (something like this?)

Who is behind issues.joomla.org?

Also mention #4Zehan Zhao who did some excellent work during GSOC 2014 - (archive)

@allenzhao: I hope I wrote your name correctly?

Otherwise: Great job ?

I would also call it:
About The Joomla! Issue Tracker™ Project
(with the caps)

Four projects are currently hosted and maintened here:
...

• J!Tracker

You could mention here somehow that this is the same thing you are talking about...

Draft n°2.
Do not hesitate to comment, proofread my Franglish, suggest new ideas...
Thank you!

About The Joomla! Issue Tracker™ Project

What is it for?

The Joomla! Issue Tracker is an official Joomla! website focused on reporting Joomla! bugs, testing patches, submitting patched and/or submitting new features.

Four projects are currently hosted and maintained here:

• Joomla! CMS
• The present J!Tracker
• Patch Tester
• Weblinks

We are always looking for more people to test patches, find and fix bugs, and help clarify issue reports on our bug tracker. Do not hesitate to join us. If you want to learn more about the process, please read, among others, the JDocs article on How to fill bugs and issues .

How is the Issue Tracker powered?

The Joomla! Issue Tracker is powered thanks to the Joomla! Framework, integrating with GitHub to replace the existing Joomlacode solution.
The Joomla! Framework is a free and open source PHP framework which allows building powerful web applications by writing web and command line applications in PHP, without the features and corresponding overhead found in the Joomla! Content Management System (CMS).

Who is behind issues.joomla.org?

The Issue Tracker application is the result of the hard work of Dmitry Rekun, Nikolai Plath, Michael Babker and Zehan Zhao. In addition to these 4 major contributors, 23 other members are contributing to this application. You can see the full list here.

Back on...

Until the end of 2014, Joomla! was using JoomlaCode.org as a resource for developers to build and manage Open Source software projects centered around Joomla. In 2012, Joomla! Project started to use GitHub and, in parallel, it has been decided to build Joomla's own inbuilt bug tracker, using the Joomla! Framework.
Issues.joomla.org has been launched in September 2012 and keeps on growing since then.

What's new on issues.joomla.org?

The Joomla! Issue Tracker is constantly improved and is now multilingual. Translations are done via our translation tool Crowdin and merged (nearly) automatically here. If this website is not yet translated in your language, join us on Crowdin.

New projects will be also added to this website. Stay tuned!

Looks good ?

contributing to this website.

maybe "contributing to this application" as the Tracker is a application? (i know it is hair splitting)

@zero-24, done and also modified 'website' into 'application' at the beginning of the same paragraph.

@zero-24
Nope, agree!
"hair splitting" would have been saying you should say:

is aN application?
? ?

Thanks @Sandra97

"hair splitting" would have been saying you should say:
is aN application?

hehe 1-0 for @MATsxm

I've copied the text from here, cleaned up a little Franglish and tweaked the international section a bit and published it.

https://issues.joomla.org/page/about

Thanks to all for their feedback and ideas.