Report: Social Media Marketing still Pays,company revenues up by 18 percent over the last 12

A new research study conducted on major social networks claims that  social media channels are the useful medium when you are marketing your brand over several social streams. These research shows that the companies worked on social marketing with dedicated teams .
According to report “Social Media Mavens” on average grew company revenues by 18 percent over the last 12 months, while the least engaged companies saw revenues sink 6 percent on average over the same time period.
The study reviewed more than 10 social media channels across all major social networks including blogs, Facebook, Twitter, wikis, and discussion forums for each of the 100 most valuable brands as identified by the 2008 BusinessWeek / Interbrand Best Global Brands ranking.
Scores for overall brand engagement ranged from a high of 127 to a low of 1.  The top
10 ENGAGEMENTdb brands with their scores are:
1. Starbucks (127)
2. Dell (123)
3. eBay (115)
4. Google (105)
5. Microsoft (103)
6. Thomson Reuters (101)
7. Nike (100)
8. Amazon (88)
9. SAP (86)
10. Tie – Yahoo!/Intel (85)
Study revealed that companies fell into four specific categories in terms of their breadth and depth of investment in social media channels — Mavens, Butterflies, Selectives, and Wallflowers.