Debate Second Life Open Sim

I read a lot this week about the debate Open Sim vs Second Life......

I think that SL is much more better for now.....
but I still think that Open Sim is very interesting because it has an Open Souce approach as Firefox, Linux and open source drove the whole www for years and it is getting more and more important......

I read with interest the Koinup folks have now an Open Sim area on their website