No, its more like a walking exploit machine. It basically takes all the work out of exploiting various vulnerabilities.

Also, to answer your question, in the OP it says this.
The Metasploit Framework is an advanced open-source exploit development platform
Nessus is a vulnerability scanner, this is a vulnerability exploiter.

Do you guys consider this tool OK to use, or is it too 'n00b', for lack of a better word.