Why are you so stuck on negative feedback? Negative feedback occurs between a buyer and a seller. Where have you seen ebay leave negative feedback?
from the ebay User Agreement:
Liability
You will not hold eBay responsible for other users' actions or inactions, including things they post. You acknowledge that we are not a traditional auctioneer. Instead, the Sites are a venue to allow anyone to offer, sell, and buy just about anything, at anytime, from anywhere, in a variety of pricing formats and venues, such as stores, fixed price formats and auction-style formats. We are not involved in the actual transaction between buyers and sellers. We have no control over and do not guarantee the quality, safety or legality of items advertised, the truth or accuracy of listings, the ability of sellers to sell items, the ability of buyers to pay for items, or that a buyer or seller will actually complete a transaction.
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Release
If you have a dispute with one or more users, you release us (and our officers, directors, agents, subsidiaries, joint ventures and employees) from claims, demands and damages (actual and consequential) of every kind and nature, known and unknown, arising out of or in any way connected with such disputes. If you are a California resident, you waive California Civil Code §1542, which says: "A general release does not extend to claims which the creditor does not know or suspect to exist in his favor at the time of executing the release, which if known by him must have materially affected his settlement with the debtor."
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Indemnity
You will indemnify and hold us (and our officers, directors, agents, subsidiaries, joint ventures and employees), harmless from any claim or demand, including reasonable attorneys' fees, made by any third party due to or arising out of your breach of this Agreement, or your violation of any law or the rights of a third party.
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Resolution of Disputes
If a dispute arises between you and eBay, our goal is to provide you with a neutral and cost effective means of resolving the dispute quickly. Accordingly, you and eBay agree that we will resolve any claim or controversy at law or equity that arises out of this Agreement or our services (a "Claim") in accordance with one of the subsections below or as we and you otherwise agree in writing. Before resorting to these alternatives, we strongly encourage you to first contact us directly to seek a resolution by going to the About Customer Support help page. We will consider reasonable requests to resolve the dispute through alternative dispute resolution procedures, such as mediation or arbitration, as alternatives to litigation.
Law and Forum for Disputes - This Agreement shall be governed in all respects by the laws of the State of California as they apply to agreements entered into and to be performed entirely within California between California residents, without regard to conflict of law provisions. You agree that any claim or dispute you may have against eBay must be resolved by a court located in Santa Clara County, California, except as otherwise agreed by the parties or as described in the Arbitration Option paragraph below. You agree to submit to the personal jurisdiction of the courts located within Santa Clara County, California for the purpose of litigating all such claims or disputes.
Arbitration Option - For any claim (excluding claims for injunctive or other equitable relief) where the total amount of the award sought is less than $10,000, the party requesting relief may elect to resolve the dispute in a cost effective manner through binding non-appearance-based arbitration. In the event a party elects arbitration, they shall initiate such arbitration through an established alternative dispute resolution ("ADR") provider mutually agreed upon by the parties. The ADR provider and the parties must comply with the following rules: a) the arbitration shall be conducted by telephone, online and/or be solely based on written submissions, the specific manner shall be chosen by the party initiating the arbitration; b) the arbitration shall not involve any personal appearance by the parties or witnesses unless otherwise mutually agreed by the parties; and c) any judgment on the award rendered by the arbitrator may be entered in any court of competent jurisdiction.
Improperly Filed Claims - All claims you bring against eBay must be resolved in accordance with this Resolution of Disputes Section. All claims filed or brought contrary to the Resolution of Disputes Section shall be considered improperly filed. Should you file a claim contrary to the Resolution of Disputes Section, eBay may recover attorneys' fees and costs up to $1000, provided that eBay has notified you in writing of the improperly filed claim, and you have failed to promptly withdraw the claim.