According to Dow Jones VentureOne, 49 Web 2.0 companies have been funded in the first half of 2006, garnering $262.3 mln in equity capital. That compares to 51 deals and $199.1 mln invested into similar companies in all of 2005, indicating activity is likely to double 2005 level. A total of $13 bln was invested in 1,213 US venture-backed companies in the first half of 2005. The median size of a Web 2.0 financing round 2005 is $4.4 mln, compared to $7.5 mln for a venture financing overall. 65% of the Web 2.0 deals so far 2005 have been seed- and first-round deals. Among the largest Web 2.0 deals 2005 are Facebook, which received a $25 mln second round and Zimbra, which received a $14.5 mln later round.