Where can I get free appraisals for antiques and other collectibles?

I have inherited a house full of various antiques and probably more items that aren't true antiques, but more vintage and collectibles like Depression glass. I have joined several antique and collectible online message boards. At first I was getting feedback, but after a while, the other members stop responding to my posts, although I don't know the reason for that. I have hundreds of items I want evaluated as to age and value. Does anyone know of a Web site that does this, especially important is that it be a FREE service and the members won't get tired of my continuous postings?