I have been setting up a number of logins and syncing my 1password account via dropbox between my PC and iPhone. I'm having two problems with certain thumbs:
1) They do not download properly on both PC and iPhone (e.g. Avis.co.uk)
2) They download properly on my PC, but not my iPhone (e.g. next-episode.net)
For (1) I got the Avis thumb to show up by changing the url to avis.com temporarily downloading the thumb, and then changing it back. However, while it now shows up on the PC, it still doesn't sync over to my iPhone.