The document provides data on registered user accounts for various virtual worlds by age group for Q4 2009. It shows that the total registered accounts reached 803 million in Q4 2009, with the largest segment being 10-15 year olds at 392 million users. A chart also shows quarter-over-quarter growth in total registered accounts from Q1 2009 to Q4 2009. Additional charts and a radar chart categorize virtual worlds by genre, sector, target age group, and development stage.