Cloudsponge

CloudSponge helps your business grow faster. Our products will deliver a dramatic improvement the performance of your existing referral features. Stop making your users type their friends' email addresses into your referral form, use CloudSponge instead. CloudSponge imports address books from Yahoo, Hotmail, MSN, Gmail, AOL, Outlook and Mac OS X Address Book. Use these addresses to Invite Friends, Find Friends, or whatever application you need. CloudSponge can easily be plugged into your website in less than 5 minutes using our simple copy/paste HTML widget. For more advanced applications, we also have our Address Book API available. We're in the business of keeping on top of 3rd party address books, so you can focus on your core business.