Your reputation as a buyer (or feedback rating) is the most important thing people see when they deal with you on eBay. It is on the basis of this little number that they will decide whether they can trust you or not.
Each time you buy or sell something on eBay, people can leave feedback for you, and you can leave feedback for them. This feedback can be positive, negative, or neutral, along with a comment. Your feedback rating, then, is worked out using a very simple sum: the number of positive feedback comments people have left for you, minus the number of negative ones. This means that someone with a feedback rating of 28, for example, might have 30 positive ratings and 2 negative ones.
If you are a considerate buyer, then you should find that positive feedback will just appear next to your username, without you needing to do anything. If you want to help it along, though, there are a few things you can do.
Always leave feedback for others: People will feel an obligation to leave feedback for you if you leave it for them (eBay will send you an email after each transaction to offer you the opportunity). Take the time to write a positive comment about...