Adding a Facebook comments box to my site. It works,but is my technique correct?

Question

I wanted to add a simple comments box to my page, so I did this:

1. Created new application
2. Filled out ONLY 'Site URL' and 'Site Domain' (I overlooked canvas or any other options)
3. Got my appID

In my HTML file

1. added the FB namespace
2. included the FB JavaScript file
3. executed fb.init() with my appID

and I'm able to use fb:comments on my page and it works, but is this the right way to do this? I just want to add the comments to my site, and that's it. I don't want to build an app inside facebook.

any input is highly appreciated, thanks!