This is similar to the country-specific redirection above, and shows arrogance on behalf of Web designers, who believe they know what's best for their users.

Sometimes the mobile site is pretty good, but I'd rather be asked what I want to do. Don't just redirect me to the mobile site. Often these versions of sites simply lack the functionality of their main counterparts. Modern mobile phones are perfectly capable of viewing standard Websites anyway.

An even worse sin is redirecting a user not based on the browser they're using, but their IP address. This means that if I access certain Websites via my laptop when tethered to my mobile phone, I end up viewing the mobile version of the site. Somebody clearly hasn't thought that through.

Whatever the case, creating a mobile version of a site isn't the best policy. Instead, consider creating an app. Often . Thanks to , nowadays there are three main mobile platforms: iOS, as used with the iPhone and iPad, Google Android, and Blackberry (although ). In a year or two's time you might have to , but it's not absolutely necessary