I was not aware that I could have two iTunes accounts, and I do not think that I do. I have noticed that sometimes, when I go into iTunes it claims that I have incorrectly attempted a log in a number of times before. Could things be getting out of synchronisation between iTunes and the App Store?
If I go to the App Store and to the 'Purchased' button, the system shows me those that I have purchased, and even then I cannot make comments.