eBay 25th Anniversary. Sellers who have taken part in eBay Live or eBay Open know we like to close our events with a special thank you. Even though we couldn’t all be together for our 25th Anniversary Sellerbration, eBay employees from around the world made a point to express their gratitude for the sellers who power the marketplace. Feel the love with this virtual clapping tunnel, and know that wherever you are, we thank you!