Monthly Archives: March 2012

CDN to the Max

It was time to put my money where my mouth is, or at least to give the use of a CDN a try. Based on previous tests MaxCDN seemed like a decent, dirt-cheap solution, so that’s what the js, css & images for this blog are served from now.

Setting this up was very easy:

  1. log into MaxCDN and set up a pull zone on with origin
  2. create in the web interface of my DNS-provider (as a CNAME to the domain-name provided)
  3. configure WP Super Cache to use instead of the non-cdn

The speed difference can be huge, especially when routing to my origin VPS-server in Germany isn’t great. I’m sure my 2 overseas users and Google will approve!

Bandwidth-wise, with 10MB/day, I seem to be far from the 1TB/year I’m allowed, so if you’d like me to setup a (temporary) pull zone for your blog so you can check out if this would work for you then just drop me a line.

Bad Karma Blocks WP YouTube Lyte

On a blog that uses WP YouTube Lyte which I happened to stumble across, the following warning was displayed:

Hey! If you’re browsing in Firefox, there’s a very good chance that you won’t see youtube / video embeds.

As I really don’t like bugs but couldn’t reproduce any issue myself, I contacted the blog’s owner to find out what was happening. The description of the problem was pretty confusing:

The still shot/first frame of the video is there with the play icon, so things look hopeful, but when you click on the play icon the entire video disappears from the page. Page structure / layout does not change, but you are left staring at a blank white box where the embed should be.

A white div of death, really … Anyway, to cut a long story short, the misbehavior was caused by “Karma Blocker“. This Firefox addon “blocks resources based on their karma”, using a ruleset that scores behavior to blocks banners, trackers and also WP YouTube Lyte (or rather, the YouTube iFrame). Apparently the combination of the bad karma of JavaScript and the iFrame triggered the blocking mechanism.

I couldn’t code around Karma Blocker and chances are small the default configuration will give YouTube iFrames better karma, but the next version of WP YouTube Lyte (1.1.0, to be available soon) will display a simple message kindly letting users know they might want to adapt their Karma Blocker’s weightings.

But why is karma punishing me?

Watch this video on YouTube.

As found on the web (March 7th)

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