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Originally Posted by briandor
I'm guessing they will all run simultaneously since it is likely that AOL will write their client for RIM and Yahoo will write theirs. It will just be as simple as running two applications.
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This is not the best way to run IM on a BlackBerry -- This gobbles up a lot of data.
The ideal way to do this is the single-socket method, ala WebMessenger. Or the slower SMS method, like in the 7100t instant messaging.
There will be performance issues if running multiple IM software as separate applications running in the background, unless running on faster-CPU-based BlackBerries such as 7250. Also, there are socket-blocking issues with multiple open sockets, and keepalive issues on some carriers (once-a-minute keepalive pings can gobble over 1 megabyte per day if keeping 4 sockets alive)
That's why the Verichat people are rewriting their instant messenger to use one socket for all four networks.
My bet is that RIM is just doing a SMS-based instant messager such as the 7100t based instant messaging software. This is easiest to do, and uses the least data, as not all carriers are truly on unlimited plans.
Although it is entirely possible that the blackberry.net APN could be used for instant messaging, then it could be even more reliable that way. Time will tell...
RIM is doing a great thing by making BlackBerries more popular and consumer-friendly, however, I don't view it as the demise of third party instant messaging software. That's why some of us pay $30 to buy Trillian (For Desktop PC's) from
www.trillian.cc to replace MSN Messenger, ICQ, Yahoo Messenger, AOL Instant Messenger, into one software program. Unless RIM does a miracle of making the software 100 times better than the 7100t instant messaging software, I'm one of those heavy users who still need to use third party software...