Reminder: AuctionBytes-Update does not endorse the products and services featured in the "This & That" column, which often features new Web sites. (Anyone can set up a Web site.) Fraud has become widespread in the online auction world, and you should think twice before giving private information or User IDs and passwords to any third party.

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This list of key dates of upcoming changes to eBay published on the eBay Developer's blog is handy for sellers as well:
Expanded Seller Protection: Feb 2008
Search Visibility (Best Match will become the default sort in search): March 2008
Safe Payment Requirements: March 2008
eBay Item Holds: March 2008
PayPal Payment Review: March 2008
Feedback Changes: May 2008
Seller Dashboard: May 2008
PowerSeller Requirements: July 2008

Note that PowerSellers will receive an invitation to enroll for Expanded Seller Protection when it becomes available. It's AuctionBytes' understanding eBay/PayPal are experiencing a delay in rolling out the program, you can read about the program here (https://www.paypal.com/us/cgi-bin/webscr?cmd=xpt/cps/securitycenter/sell/UnauthorizedPaymentProtectionFAQs-outside ).
http://ebaydeveloper.typepad.com/dev/2008/02/4-key-dates-to.html