Well after reading all 7 pages, i just want to say thank you to Jaerik and Scragg. Personally i probably wont block anyone as i generally like to see it no matter what it is so i dont feel like im missing out. That doesnt mean i'm not happy with the function, in turn it will stop *** hitting my screen by people not replying or starting fights.
Edit: also a question which i didnt see answered on the first page which i am curious about, if you block someone and they start a thread does the second post look like the OP?