For me, the international expansion of eBay was the best idea. We are now in 35 countries, and have a huge global network. The second best one was the acquisition of PayPal - the wallet on eBay.

Advertising Disclosure: Please note that many links to retailers are affiliate links, which yields a commission for us. allauthor.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon sites.