V12 Data - V12 Data offers rich data sets with verified addresses and emails for personalized marketing campaigns.
Yotpo - Yotpo is the smartest way to generate customer content, drive traffic and increase conversions.
Lotame - Make your data actionable, learn about your most valuable customers, improve ROI by targeting the right audience and increase relevance across screens.
Swagbucks - Swagbucks is a loyalty program that offers individuals rewards for engaging in various activities. Users can earn reward points for performing Internet searches, purchasing items from affiliated vendors, or completing polls.
Google Audience Center - 3 votes and 6 comments so far on Reddit
Five Stars - Discover millions of rewards from thousands of local businesses.