Fix - Facebook profile application tab blank page

I think many new Facebook application developers face this problem. You do all the steps instructed in a book or the documentation and you still get a blank page for the profile tab. Yeah I know the feeling, It sucks big time, This error almost made me stop learning about Facebook app development.
After hours of searching and experimenting I found the solution for my problem.

Solution for my problem:

Canvas Callback URL should have a trailing /
Ex:
Canvas Callback URL: http://xxxxxx.joyent.us/

If you are using http://yourdomain/index.php just remove index.php since it will be loaded in default.

SEO Title Tag - 63 Characters or Low

In my opinion html title tag is most important thing in SEO optimization.
Creating meaningful and keyword specific titles is a must if you need a high rank in search engines.

Things to consider when writing web page titles

1. Keep the title less than 63 (max: 70) characters.
2. Put the important keywords in the front as possible.
3. Putting the site name in the tilte is a choice you have to make with lot of thought. If you think that the site name has a good branding effect you can put the name at the end or front.
4. Without using and, or, is try to use comma or |
5. Don't use any meaningless words or special characters
6. Never use duplicate titles on pages