LinkedIn's 404 page isn't looking good - it's just an apache error report.

BT needs to sort out how it uses javascript - it looks stupid in the search results and appears to break its own accessibility policy.

Microsoft is serving up messages telling you to tell Microsoft to upgrade its version of Silverlight, its own software. How confusing is that ...?

Disqus, Sezwho and IntenseDebate offer advanced functionality like threaded comments, cross-site reputation scores etc. But their reliance on javascript means they are likely to be hiding your comments from google - not great from an SEO point of view.

How all Johnston Press Digital Publishing site's headlines say 'You need to have javascript enabled to view this correctly'

The Guardian's redesign of its comment section breaks its own accessibility policy by relying purely on javascript. Not only that, it's a usability nightmare.

Quidco aren't going pay me my £120 cashback because of their opaque tracking system.