These pages can be a mine of information, they can usually tell you a lot about the sellers on ebay. Additional information regarding a sellers operations may also be listed there, whether they are a stay at home parent, working but selling part time or a full time business seller.
Many do not know that a link is also allowed on about me pages to a website operated by a seller, which is off the ebay website.
You may also find other links listed to sites relevant to the type of item you are looking for, these links would usually be knowledge based and afford you information which would help you in your decisions to purchase (or not to) of a particular item, or would give you some interesting background information at least.