Nigel,Thankyou - I am in the picture now.I appreciate it is difficult to conceive or conceptulise what patterns and needs might emerge at this stage. Real-time collaborative interaction is a new consideration for me and describing how an object should behave whilst being under the influence of multiple users has never been a design issue. I will no doubt discover as I get stuck in.ThanksAndy

Thank you Raff.I get the picture now. I was assuming that if you could create rooms, authenticate etc from a third party server - then you could also send a 'message' to the room.Its good that you are planning it as it will open a world of possibilities.

Stefan,The youtube demo works now – thanks.I appreciate what you and Raff are saying. The considerations regarding real-time data transfer is a new area for me. I am quite a cautious and conservative developer who never really goes for ‘effect’ – I will carefully assess the communicative value of an interaction before sticking it in an application.I am beginning to build a picture of what is involved (I know this is obvious):Collaborative interactions send messages which get multiplied from the ...

why do you guys keep sending me these things?

Thanks Cocomo, I was jumping in with too much excitement! I did agree to the terms and conditions, but I did not read them... for technical reasons. My adobe acrobat plugin malfunctioned a some time ago, having been unable to fix it I have been simply downloading PDF's and reading them offline. But, you cannot do that with links embedded in flex and the terms PDF was nowhere else to be found.Anyway, I found the service restrictions and see the bandwidth is 3GB and concurrent users is 15.