WTF Mobile Web may seem like a snarky repository of poorly designed and implemented mobile web experiences (it is) but it also serves as a great learning tool for what not to do. The web is a nimble place and mobile has really taken off in the last year. If you choose to embrace serving a customized experience to mobile users you better do it right. Unfortunately, as this site proves, not everyone does. Learn from it.. and laugh at it, we've all been there.