1. Facebook: $240 million on Oct. 25
2. Facebook: $60 million on Dec. 3
3. Ning: $44 million on July 11
4. Metaweb Technologies: $42.5 million on Dec. 31
5. Zillow: $30 million on September 2007
6. Metacafe: $30 million on Aug. 16
7. n2N Commerce: $30 million on Jan. 31
8. Veoh Networks: $25 million on Aug. 31
9. MyStrands: $25 million on April 11
10. Reunion.com: $25 million on May 21
Source: The Industry Standard
