I don't know enough about appraisals to give one. I was only visiting this area to learn. I wonder what you think you will gain from a thread title like this one? The folks posting here are only doing it as a friendly service. Getting angry and abusive certainly isn't going to help anything!
For one this is a FREE service. I expect most people here give their honest option on what they think the domain is worth. Also if anyone gave a stupid appraisal I sure there would be someone who would post to put that person in their place. So if someone posts saying domain is not worth anything and everyone who views the post agrees with that then they are not all going post just to say the same thing.
What do you mean that this forum is biased? In what ways? If you're talking about people giving appraisals that seem way off, yes, it happens, but that's their opinions on the name. I've also noticed a number of people giving appraisals that seem to be newbies to domaining that don't really know what they are talking about sometimes. There are appraisals that are way too high & there are appraisals that are way too low. But the good thing about this forum is that everybody here learns & the appraisals are free, you don't have to pay for it.