1) Some people have commented on the fact that only English counties have been released so far, and no Welsh. In fact, there is a very good reason. The full story is at the 1911 census blog, run by FindmyPast at http://blog.1911census.co.uk/2008/12/the-order-of-scanning-and-our-unintentional-northsouth-divide/. Essentially, the records are being digitised in order of piece number as held at the National Archives in Kew.
2) There have been comments on the fact that the entries are over £3 each for a single image, as opposed to the cheaper earlier censuses, and the equivalent census for Ireland, which has many documents and which is free.
Again, the 1911 census blog has announced that there will be many additional pages added in the next month or so. If you have already paid for an image, these extra pages, including the enumerator's return, a description of his walk, and many others, will be added to the image as held in your account. See http://blog.1911census.co.uk/2009/01/more-images-available-within-the-month-at-no-extra-cost/
3) There have also been comments by some people that they would prefer to access the images on a subscription through FindmyPast, rather than pay-per-view. Again the blog has the answer - they will be available at the end of the year on a FindmyPast subscription - see http://blog.1911census.co.uk/2009/01/pricing-and-future-subscription-options/.
Bottom line - keep an eye on the 1911 census blog at http://blog.1911census.co.uk - it's answering questions fast and furious!
Professional family history research & genealogical problem solving