What is a one-sentence summary of the following article?
If you're not already on the eBay website, navigate to http://www.ebay.com. Move your mouse over the "Hi, (your name)" text in the upper left corner of the page. You should see a menu with options for "My Collections", "Account Settings", and "Sign Out". You will be brought to your account management page. Here, you have a variety of options in terms of providing personal information, setting your own preferences, and more. On the left hand side of the page, you should see a box of links with "Personal Information" listed at the top. Click this. You should see a small table listing some of the information you provided when you made your account. The second row of the table contains your user ID. Click the small "edit" link at the far right of this row. Note that you can edit all of the information on this page, should you choose to do so. You'll be asked to sign in to verify that you are, in fact, the owner of the account whose user ID you are attempting to change. Your user ID should be pre-filled in, so all you'll need to do is provide the account password you chose when you created your account. Click "Sign In" when you're done. On the next screen, you'll be asked to provide the new user ID you desire. Keep in mind that you can only change your user ID once every 30 days, so choose carefully! Click "Save" when you're finished. If the name you choose isn't already taken, your new user ID will be put into effect immediately.

Summary:
Visit the eBay homepage. Open the account menu in the upper left. Click "Account Settings". Click "Personal Information" on the left. Click the "edit" link to the right of "User ID". Sign in. Choose a new user ID.