Okay, you landed to my nonsense no value blog to search for crappy things right?
SO here it is. Your trying to figure out if the blog/site your trying to spam or comment on is a nofollow.
Here's a simple trick.
***Land to a site that is subject to your attack or contribution, press ctrl+u then ctrl+f, then type nofollow.
If nofollow keyword comes out within a code from the script of the site then so dude, you will not be able to get your free backlinks.***
See you again and I'll be posting crappy things soon.