In their own words

Segment and target your Twitter audience as never before. Through our patented data mining and matching technology, we have identified over 50 million Twitter users and their attributes, as defined by 30,000+ variables.

StatSocial insights and segmentation available for any social audience include:

• Age (Nielsen Segments)
  
• Geo-location (City, State, Country, Nielsen DMA)
  
• Income
  
• Industry
  
• Education
  
• Social Graph Activity (influence, impressions)
  
• Interest (370 IAB categories)
  
• Brand affinity (8200 brands)
  
• TV show affinity (1100 TV shows)
  
• Celebrity affinity (22K celebrities)