Its very easy to delete your shaadi.com account/profile. Here’s the procedure,

Log in to your Shaadi.com account, and go to My Shaadi > My profile. Then click on Hide/Delete Profile link under this section. Now, click on delete profile.

Download and enable the flags module

http://drupal.org/project/flag

Flag module is very customizable because it is more flexible and you can integrate it in views.

In order to create a tab in Users's profile, that will lsit their favorite nodes:

1. First create a view
2. Select the fields you want
3. Select an argument uid and connect it to currewnt logged in user
4. Create a page called user/%/favorites