Complex sentence: Play.com now has approximately 500 staff and 5,000,000 items for sale, and most recently added a feature called PlayTrade (like Amazon Marketplace) allowing third party sellers to sell on the site.
Split into simpler sentences: Play.com now has approximately 500 staff and 5,000,000 items for sale. Most recently, the company added a feature called PlayTrade (like Amazon Marketplace) allowing third party sellers to operate on the site.