What is the URL you used for the homepage?
Threatfire is not a firewall.
It is, as I said, a behaviour blocker. I find it user friendly; some users do not, it depends on how much you learn about it, via the help files, or research about behaviour blocking generally.
Personally I think you need to learn more about what the various internet threats are, and how to protect yourself from them, rather than installing applications and hoping they will do the job.
Find out what you want to achieve, then find an application (or user procedure) that will provide for that.
I read some reviews from google and some stupid guy said that "but still it lacks heuristics features"
Why do you ask this? Are you interested in studying stupidity?
You can find things on Google that says almost anything. Doesn't mean it's valid. And I'm not interested in following this line of discussion, unless you come up with a better source or reasoned argument.