One #ux fail I’m seeing more and more is the “we’ve got a different version of this site for your locality! Would you like to go to it?” whole-page overlay on permalink pages. So many problems:

• Why do you have multiple versions of the same site if the content is equally valuable on either one (e.g. recipe sites)?
• If language is the reason (I have never seen this) exactly why can’t you internationalize the UI and offer some sort of auto-translation of the content? Or leave the translation to me/my browser whilst having a small, unobtrusive banner letting me know I might be able to find similar content in my native language.
• If I’ve followed a permalink, I want to see that content. Offering me a redirect to a generic homepage is useless