Updated on Apr 07, 2011 @ 02:54:

If you made the change below for 3.1RC-3.1 and/or used manually created tag/category links in 3.1RC-3.1 and just upgraded to 3.1.1, you may find that the links are broken. The reason is that in 3.1.1 the tag and category links returned to the 3.0 style with the word "archives" in the URL.

To make it work you can change .htaccess to the following:

Posted on Feb 25, 2011 @ 00:22:

In WordPress 3.1 the link structure have been changed

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http://www.webpagetest.org/
http://loadimpact.com/pageanalyzer.php

You can use Coral free CDN to off-load the WordPress attachments (usually images). In order to use Coral you need to add ".nyud.net" to the site DNS address. For example, http://www.alekz.net will become http://www.alekz.net.nyud.net. Coral is usually too slow to serve all static content, so the most effective solution would be to use it only for the biggest files.

Here's a simple solution. Add the following to functions.php of your current theme:

add_filter ('wp_get_attachment_url', 'freecdn_url');

function freecdn_url ($url)
{
    if (! is_attachment () ) return $url;
    $cdn_url = ".nyud.net";
    $decomposed_url = explode ("/", $url);
    $decomposed_url[2] =  $decomposed_url[2] . $cdn_url;
    $url = implode("/", $decomposed_url);
    return $url;
}

Your theme (e.g. the bundled "TwentyTen") must use wp_get_attachment_url(), of course. If not – you got the idea, didn't you? ;-)

Also, you can use freecdn_url () function to rewrite any URL you want to download from Coral.

getElementsByClassName is defined in HTML5. From WhatWG:

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Twitter and Facebook should be updated

Sometimes you need to integrate web-pages with corresponding forum threads. Here's one of the way to do it.

One of the methods to break out of frames:

• Explorer < 7.0 does not understand CSS "position: fixed" – Use Firefox! ;-)
• It's a scratch pad after all!
• will fix it sooner or later when I have time ;-)

And here it begins…