[nicklecompte]

Am I misunderstanding what "open standard" means? Why don't vCard and iCalendar count?

[steve1977]

I was being sarcastic. vCard and iCal are open standards - and that is probably why there are not used by many. Because many vendors like vendor lock-in.

[nicklecompte]

Got it - thought you were saying vendor lock-in meant the standards were de facto not open (which seemed unfair, the standards are transparent and not unusually difficult to implement).