Hi, > Maybe with google trends > http://www.google.fr/trends/explore#q=flex%203%2C%20flex%204%2C%20as3&cmpt=q
It shows interest in flex 3 at around 90% of that of flex 4 each month over the last 12 months. You get slightly different results if you use "flex 3" and "flex 4" so I'd say it's only rough indication but better than guessing. Justin
