I think taking this step shows that you're smart enough to know what you don't know. For companies like Dell, etc. they know they need to open an avenue for input on their work. It's good 'ole listening to your customer. It's like a "How am I driving?" sticker, but it gets positive input in addition to the negative. In all, it's input, and any company that recognizes that they need to listen to their customers understands their business.
EDIT: Hey downvoters, this is a genuine question. I think the idea is good, but most of the activity is from open source fans, which is great but they represent a small subset of Dell's market. Many of Dell's potential customers won't get involved - they'll just buy Apple.