Don't conflate the digital world with the real world. If you really want to go there... The way I see it, Linked in is more like a public square anouncement board. You can write down the details of what is there and sift through it on your own, or pay them to give you a summary based on what you are looking for.

Edit: Would it be illegal photograph the board, OCR it and provide a summary for half the price of others? There is such a thing and "wrong/stupid laws"