I bet it will be fabulous to use on my Robotron 300. 

http://www.twitch.tv/bethesda/c/2685811
(pubescent lol at 0:30:00) 

http://steamcommunity.com/sharedfiles/filedetails/?id=166554615

What do you think? Someone please proofread. Did I forget anything important? etc 

Proof-reading and unfiltered thoughts, mostly sequential I hope:

It's httpS://www.quaddicted.com/ , if you link to http you just make it take longer as it redirects. :)

I'd rather link https://www.quaddicted.com/reviews/random_recommendations.php than the single random map redirect. This one is limited to well rated maps while the single one is truly random.

"Click on Maps in the top menu.", I'd make Maps a link.

"Nice (4) and Excellent (5) results." -> "Nice (4 hearts) and Excellent (5 hearts) results." maybe?

"Once you have downloaded a level, it needs to installed correctly to be able to load it in the game.", I'd drop the last part. -> "Once you have downloaded a level, it needs to installed correctly."

Step 0 in Installation could be "look if there is a text file and if so, read it".

"It only needs to be copied (or extracted directly) into the" -> "This file only needs to be put into the"

"you will need to create the directory manually" -> "you will need to create this directory manually"

'simple' is a bad word but I have no better idea myself. Maybe 'plain'?

I'd add examples for the console commands and parameters: "skill 1", "map 768_negke", "-game honey".

You sometimes use "folder" and sometimes "directory". Directory would be correct but for Windows people understand folder better I'd guess. Minor nitpick. :)

"Source port" is a doomism, please help eradicate the internet of it!

Java: The security issues are for when it is set to run automatically in the browser. Maybe add "If you are worried about security issues, just make sure your browser does not automatically execute Java applets on websites."? People should not be afraid of Java. :(

httpS://www.java.com/en/ ;)

"and download latest version." -> "and download the latest version."

I think there is a .bat file included in the QI zip, not sure why but I guess that is what Windows users should run.

"JAR files with Java.)" there is a trailing parenthesis with no opening counterpart.

On the first run the QI will prompt the user to go to the configuration by itself.

Maybe link to JohnnyLaw's engine guide in the configuration paragraph?

The QI supports scanning the Quake dir for previously manually installed maps/mods with varying success!

For winquake the parameter for memory is -winmem XX (XX = MB!) from what I remember.

Maybe add a note about support at Quaddicted? We are not perfect and some packages will probably fail when installed with the QI because we fucked up.

-----

Great work, thank so very much! bier_gut++;

I thought about adding a big download button as noobs might not realise they have to click on the zipname and honestly, it is kinda hidden in the table. 

Thanks. I'm going to revise the guide some time soonish and will take your comments into consideration. 

http://7dfps.com/ starts in two days. 

http://arstechnica.com/gaming/2013/08/john-carmack-leaves-id-software-for-cto-post-at-oculus-vr/ 

huh! I thought he spoke rather negatively about the oculus rift at quakecon and assumed the worst. I have to admit that I find "more immersion" a terrifying outlook somehow.

must be awesome to be able to fully live ones hobbies like him. 

I literally just shouted "what the fuck" when I saw that news story 

Joining Oculus VR != leaving id. 

He's going to devote himself to Occulus full time. That does not leave a lot of time for doing anything substantial at id. Certainly not heading the development of new engines. 

Seems Id is firmly in the grip of Zenimax? 

And now I am fully depressed. I know he is still with id, but it isn't his main priority in terms of work.

What really saddens me is I had to come here to find anyone who didn't just shrug with a "news happens" attitude. 

I looked into getting hold of an occulus rift after seeing the news.

Then thought 'The only way I can justify $300 USD is if I make something with it' at which point I shrugged and thought 'news happens'.

I like VR's take on things though - apparently once its on general release they want to make it as close to free as possible. 

But don't bother getting a Rift until they release a proper consumer version. The dev kits have an extremely low resolution, the latest version they showed at E3 was fully HD with many fixes to latency but still not perfect.

It looks like they're going to only release it when it's good and ready for consumption. With Carmack on board full time it will only get better. 

I feel like Carmack's copernican engine shifts is a big part of the reason why we've only seen 2 Id titles over the past decade.
I'm not really an Id fanboy, I just really like Quake and the entire creative subculture. The Id from the nineties has been long gone and maybe Carmack just wants to be at the frontier again. 

id does more and more appear to fall apart in slow motion. 

the Gravity Gun was discovered 

Slow motion trainwreck or slowmotion takeover?

1994: (founder) Tom Hall gets sacked
1996: (founder) John Romero gets sacked
2005: (founder) Adrian Carmack gets sacked
2011: (art director) Kenneth Scott quits
2012: (Zenimax demotes Willits from design?)
2013: (CEO) Todd Hollenshead quits
2013: (founder) John Carmack becomes part-time technical director? 

2012: (Zenimax demotes Willits from design?)

This, as opposed to others, would be a big improvement. 

You forgot the arguable departure/firing of American McGee, Sandy Petersen, and need to include Matt Hooper leaving as well, he is also at Oculus.