With all the new sellers joining eBid, I see a lot of posts regarding no bids or nothing selling. Most of these sellers have 0 feedback but are selling items with prices (starting bids or BIN) of over £10.
If presented with a choice of buying an item from a seller with 0 feedback or an identical item with from a seller with 5+ feedback, I would choose the one with feedback, even if their feedback was only as a buyer. To me it shows they are serious about starting their business and have taken the time to invest something back (even if it is only to get feedback).
Many times, if you bid on or buy a sellers item, the seller will have a peek at what you are selling, which may lead to a sale for you.
This is just common sense to me ..... get some feedback rating which will give your buyers confidence that you mean business.
If there is nothing you particularly want to buy, take a look at the YDC auctions - all proceeds go to charity and you could end up with a really whacky / or even useful item!!
If all new sellers bought 5 items from other sellers, it would build feedback for you to inspire confidence in your buyers, and also build traffic for eBid, which in return will build traffic for you.