I e-mailed the developer about the auto-login feature and it sounds like he's abandoned this project. :-(

I guess there's no one there to keep this screenlet maintained for those of us who are experiencing issues.

This was what was received:

"Hey there!

I haven't looked at the screenlet for quite some time, not using it
myself anymore. The API might have changed, but when I developed it it
would auto-login if you have given the app the proper permissions on
Facebook.

Best regards,
Patrik"

This screenlet asks first time for logging into the facebook website and is popping up an system based dialog window..
If you haven't an account (i.e., if you are only interested in how it works..) or want to log in later and try to click it away,- it doesn't close but opens another info-box and asks again..
...and again...
...and again...
...and again...
...and again...
...and again...
...and again...
...and again...
...and again...
...and again...
...and again...
...and again...
...and again...

...you'll NEVER get rid of these horrible tiny little windows, marching up like little soldiers by every hopeful click for trying to close that message...!

Unless you restart the X-Window Session.

Was it planned when scripting this..?