When I do a critique for someone, I always try to point out good elements and make suggestions for the not so good elements within the text. Then at the bottom, I write a little note with some overall encouraging sentences and a sort of disclaimer that these are only my suggestions and he/she is welcome to take or leave them. I try to keep a positive tone with whatever I write for them, and I expect the same in return. I expect honesty and constructive criticism, but I don't want the forum equivalent of screaming either. I have never posted my writing for critique online. The closest I've come to that is to enter a contest that picked finalists and mini-critique winners each week for a month. They picked mine for mini-critique, wrote a critique for it, and posted both on their website. That was a great experience because they were honest and objective. Of course the people doing the critique were professionals in the writing and publishing industry, so I ate up every word they said, both positive and negative. I have thick skin and can take constructive criticism well, but I've seen some pretty cruel things in critique forums and such. I haven't been brave enough to put mine out there. I think I'm also a little leery about copyright issues.