A lot of people have been complaining on not being able to login to MyFacebook gadget and I really didn't know what was going on as I followed Facebook API's authentication instructions to the letter.
So I've decided to change it's authentication method. It now uses the same authentication method Popfly uses in its Facebook Data source block. To login you'll have to click on the first page link in order to get an authentication token, then you'll have to add that token to the gadget settings page.
Note that if this is the first time that you're using the gadget you'll also have to authorize it to access your Facebook account. This is an one time only extra step that once completed will redirect you to the token retrieval page but without specifying the required parameter "API_KEY". This is a Facebook bug and has nothing to do with the gadget so please don't shoot the messenger. To verify that this is not my fault you can try the Popfly Facebook block which behaves the exact same way. In this case just click the retrieve authentication token again and you'll be redirected to the right page.
If you later decide that you need to remove (I don't know why you could decide such a thing ;-)) this application from your Facebook account all you'll have to do is go to your privacy settings page then click the applications link, then the authorized applications one on the top and finally click the remove MySidebarBook link.
In this release you'll also find a number of bug fixes and corrections as well. And as the number of people that have downloaded this gadget has increased dramatically I've also decided to implement a new update notification service that will notify users of newer versions as those become available in order to keep everyone synced.
Besides that, I'd love to hear your ideas and comments on how to make this gadget better, so if you've got the time drop me a line here so that we can talk about it.