eBay launched its new eBay Mobile application, eBay Deals, adding several new features to the online auction site’s already-popular mobile-commerce apps.

eBay Deals features: Daily Deals, access to limited-quantity items from trusted sellers at deep discounts and with no charge for shipping; Deals, a mobile-optimized search to find items with zero bids and less than four hours remaining; the ability to instantly post eBay shopping activity to social networks such as Facebook and Twitter; Shake for Deals, which enables iPhone and iPod Touch users to shake their devices and let the app find the best deals for them; and Top Deals Search, which makes the seven top pre-loaded search categories available via an icon.

eBay said its mobile app is on track to reach $500 million in sales by year-end, with an item purchased every two seconds.