1, If you claim it, the comment will be sent to you via email. A cooperating web site can also embed the link. I am against javascript embedding though; too much of a privacy leak. So you cannot embed the comments directly in the original web site.
2, Admittedly the name is somewhat provoking. My point is to encourage different opinions. You have to find some value it the stuff that you roast or you will not spend your time commenting, right?
2, I personally see roast as one type of emotional attack or speech act (still looking for a better term for it), along with praise, question, supplement, etc. I don't roast things much but I do the others so personally I may feel a bit repelled by the name. However others may feel attracted by it, there are lots of us internet folk :-) good luck!
2, Admittedly the name is somewhat provoking. My point is to encourage different opinions. You have to find some value it the stuff that you roast or you will not spend your time commenting, right?