hello friends, i am working now on a website for online games, i need to use user management in the website for the comments on the games. i don't have much experience with user accounts and data base yet and its hard for me to understand what i need to do to get what i want to work good. any way, i have seen lately that a lot of websites use the "sign up with face book" button to register users... i have read some info in the facebook API and facebook for developers pages but still i am in a mass, how to use this thing and how to get it work with some of the free comments scripts that can be found on the web can someone please make some order and peace with all of this thing? 1) if i use the facebook "Single Sign-on" do i need to build database? how to do it right? 2) how does it works with comments script (and if anyone can recommend a combination for scripts that used for this sign up it will be great) 3) more information will be very helpful. Thanks for reading.