The bookstore-cum-superstore expands into auctions, taking on eBay and facing perhaps its greatest challenge yet. Meanwhile, the company continues to move into new areas of online retailing by taking a piece of start-up pet-supplies vendor Pets.com.
Amazon.com auction plans boost shares
The move into auctions will drastically alter the competitive landscape in one of the fastest-growing areas of e-commerce.
Amazon auctions could bring new risks
Amazon invests in online pet store
Web powers ponder online auctions