I use a Samsung Focus, which runs on Windows Phone 7. This means I'm currently stuck with the WP7 version of Internet Explorer. That's fine, it works alright in most cases. On the non-mobile version of the site, some links refuse to work (I push, no response at all. really strange) and sometimes I simply cannot write.
On the mobile version, everything works as intended. The only complaint that I would have is that the top menu buttons are sometimes merged into the text, which confuses the phone in that it doesn't know if it should highlight text or click the button. Sadly, it usually defaults to highlighting.
If some sort of hard coded space could be put in between the menu and everything underneath, that'd be amazing.