Were you aware that there is a shareware program that purports to enable disk mode for the iPhone? I haven't tried it, but there is a demo available here.
I have also heard some concerns about the iPhone not having built-in instant messaging capability, although this isn't mentioned in the review. It's true that it doesn't have built-in IM, but besides the old standby of using the IM services' SMS gateways (which works on virtually any digital cell phone), you can also use Safari Mobile to visit www.ebuddy.com, which seems to have a specially designed iPhone version that works very well.
That's interesting that iSquint videos aren't working... I haven't tested it, but it sounds like something I would like to check up on.
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