ClickZ, arguably the foremost authority on Internet marketing, put together an ad hoc study of XM's website a few weeks ago - and now it's Sirius' turn.

A few of the comments include the feeling that the design of Sirius.com is too masculine, key features disappear due to banner-blindness, and that once interested there's no clear call-to-action (and no price clearly displayed!).

Overall they weren't too critical of Sirius' design (it is pretty slick), but had some great points for improvements.

[ClickZ]
Thanks Jeffery!