A while back I used my excel spreadsheet to list my stash in Ravelry. Since then I've been gradually adding pictures. Once a picture is added, I've been moving the listing to the "trade or sell" section if I don't have an idea of what I'd use the yarn for or if I've decided I'm no longer interested in the project it was purchased for. I've added a link to that page on this blog.
I'm serious about making me an offer. In fact feel free to browse the entire stash. I've been rather open to requests for other yarn unless (a) I specific idea for a project and think that yarn is perfect or (b) its a yarn I purchased to try and its the only example in the stash.
I'm not actually interested in trades for yarn, since stash reduction is my primary goal. But i'd be interested in other trades. Be inventive. Maybe something unique to the area where you live. I'll also add a list of things I'm interested in, for example some older Simply Knitting magazines I'm looking for.
Or make me an offer for purchase. I tend to be rather generous with how cheaply I'll let things go, though that may be a function of how much I like the yarn.
Oh, and my Ravelry name is vaknitter . Feel free to add me to your friends and I'll do the same.