Koss - since this article is more then 2 years old, maybe its time to revise it and make a new article?

It's been revised every now & then and I feel it's a pretty near complete guide set out to speed up vbulletin as intended. For the most part, there simply isn't much more to add to it :)
http://gtmetrix.com/reports/www.vide...t.com/fokotAjK
I think a pagescore of 98 is about as close as it'll get when it comes to dealing with vbulletin. You can always throw in suggestions of course though.

I am completely baffled by what I see here

http://www.webpagetest.org/result/13...7ME/1/details/

http://gtmetrix.com/reports/www.migh...y.com/6lRw4ubE

Am I in need of improvements?

I'm pretty sure this is a bug with internet explorer when selecting your browser choice in WPT.
Testing with chrome comes out with some different results.
http://www.webpagetest.org/performan...run=1&cached=0
Using both of the results to examine what's going on with your site it looks like both can agree that caching is the biggest issue for you... and that by itself can save lots of bandwidth/server resources.

I am having some minor problems with videos streaming on my site, can this code in some way interfere with streaming players?
Problem for me is that when I load several pages with videos [on some pages few videos, articles mostly] in short time players got frozen, thay cant load video...when cache is cleared everything is ok.
Maybe it is cause my host, this code or...I don't have any idea?

I've never had any issue like that, I would guess that it's your browser or ISP. Just tested it with a video and had no problems.
http://www.video-game-chat.com/forum...l#.UkhWUoafjy0

Step 2: Combine Javascript and Minify Javascript & CSS and Minify HTML.
Not compatible with VB3

how can i implement this on vb3.8.7?

--------------- Added [DATE]1381399326[/DATE] at [TIME]1381399326[/TIME] ---------------

how do i go about enabling compression? I did some research and found the following but have no idea which to implement.
http://httpd.apache.org/docs/current...d_deflate.html

Hi there, compression is already available in that .htaccess However your host may not have it enabled which would be the best explanation. Another reason it may not work is if you're using somthing other than apache, like nginx.

As for combining js & css, I don't believe there is a mod available for that (I haven't checked because I just don't use vb3 anymore). But there are alternative tools that you can try that claim to get the job done.
https://vborg.vbsupport.ru/showthrea...60#post2450760

Also it looks like you should toss a copy of the htaccess into this folder.
http://cdn.forums.sgclub.com

http://gtmetrix.com/reports/forums.sgclub.com/jhstK2e6

Looking at your test, it appears that compression is indeed enabled.... Just be aware that most offsite elements are likely to fail on these kinds of tests and you don't have much control over them when it comes to compression & caching but you can always throw in a defer tag to see if it helps them.

Also I haven't tried to login to your forum but if you're having some login issues (most people do...) be sure to do this step too.
https://vborg.vbsupport.ru/showpost....44&postcount=3

One last thing... if you want to see more improvement I would cut down on the external resources.... You have alot, way more than the average site! I would suggest you have a look at these and decide which one's you don't need anymore. I see quite a bit of urls with "cdn" in their name, try running your site for 1 day without any cdn's transferring data, I would bet you would see improvements.
http://www.webpagetest.org/domains.p...run=1&cached=0

i've already used the htaccess you recommended, but it still says browser caching is not enabled? was there something wrong with my implementation?

Like I said, it will report that off site resources are probably not cached, gzipped etc. Since they're not on your server, you can ignore those. You will have to contact whoever you're using the third party scripts from and inquire to them about the issue.

Also your page is scoring much better now.
http://gtmetrix.com/reports/forums.sgclub.com/ctKQgbgq