If it were limited in the respect that only small groups of people could do it (for instance, those in a clan chat of a certain rank or the 5 members of a dungeon), then I see it as being plausible. But if it were everyone, then I do not support. I'm speaking personally here, as I don't know if anyone else has the same problem, but voice chat eats through my bandwidth. And crashes me when I'm capped. That's just one or two people talking. I can't see it as being overly realistic talking in the Grand exchange, for example. And with the volume of people talking at once, I can't see it even being decipherable if they did.
Just a few questions: How will you know who's talking? Or will it just be between friends? Will it limit players who have this option off and have them miss out on potentially important information? Will it push up the system requirements? Significantly increase bandwidth usage from RS?
Anyways, this is somewhere between a no support and a mild support, depending on how it is introduced and to whom you can chat. Support being for if it were between friends only (so 2-way conversations), provided the option is on. No support for everyone/most people.
A better idea would be to try and make a way to add people on the video softwares using their RS display names. Possibly through a plugin on the software itself, or in a database similar to the hiscores where you can search for peoples usernames on this (given permission from the player, of course). Possibly through the same way that there is email registration, for example, and with email confirmation of the chat details. Just a suggestion. The only downside to this is that one person who uses one software may not be able to talk to someone who uses another.
09-Mar-2011 21:48:32