Age of avatar and the likelihood of spending money in SL

http://hackshaven.com/2007/08/20/the-age-of-an-avatar-vs-the-likelyhood-of-their-spending-money/

"If valid, this graph has interesting applications when it comes to marketing and support. If you still show up after reaching the ripe old age of a year and a half in Second Life, you are an avatar where businesses should focus their attention. After all, nearly everyone in your age range is spending money in Second Life. Also, if you have a problem report for Linden Lab, perhaps they should give you more attention being a near-guaranteed paying customer."