Flickr2Twitter UI confusion

Flickr2Twitter. How hard is that right? It's actually pretty hard to set up (and confusing). Both services have decent APIs, but when you ask a common user to connect both, it becomes pretty confusing.

"An application would like to connect to your account" - I assume that's Flickr would like to connect to my Twitter account.

"The application Flickr by Flickr" would like the ability to access and update your data on Twitter." - I guess that confirms that...

Username / Email and Password field really got me though. Do you want my Flickr ID or do you want my Twitter ID?

I have no clue.

I took a guess and entered my Twitter ID and password. It worked.

Better solution:

Since I am signed in to Twitter already, can the service just display my user name / ID and ask me to enter the password to confirm?

Having the "Username or Email" field really confuse the hell out of me. I thought I need to enter some Flickr information here.

Not a criticism. Just some observation because I care. :)