Using Chrome, latest build, when I go to my account page, overview tab, all fields in the service details section are filled with my username. When using firefox I see the actual accountnames I entered.
Do you have a password manager installed or anything? Just wondering if that might be filling in the input fields. Haven't seen this happen with Chrome's built in form saving before but I'll do some testing.
I've changed the name parameter of the input fields from username to something else, let's see if that fixes it. I think it may have been getting confused that this was a login form.