I can not get 1PasswordAnywhere to work in IE8.
It works in safari and on Chrome.
I was at a friends house, was borrowing his pc, had to log into a website. Opened a new tab, went to dropbox, accessed 1PasswordAnywhere and it showed me a blank page.
I right-clicked and chose "View Source". All source code was there.
When i came home, i repeated same steps on Chrome (on mac) and it all worked.
I don't know about IE6 and 7, but IE8 definitely shows a blank page.