You've pretty much got to go buy your friend/family an iSight when you get your own if you ever want to use it. That said, once it's in the mix, you'll rarely pick up the phone again! This past xmas i picked up one for my parents several time zones away, one for my brother who recently had a kid, and one for myself. My folks can now watch their newest grandkid growing up - and not have to travel or pay long distance fees to do it! And they're likely to have a new grandkid to iSight with on my end within the next year or so. If not for someone (like me in this instance) jumpstarting this thing, no one in the family would've done it; for what it's added to everyone's lives (especially my parents), I've gotta hand it to the apple folks. And it looks a lot classier than those colored plastic little anthropomorphised pc-cam's you can get for around $50. Probably works better too.
Jeez, I could be in a commercial for this product...
Needless to say, it was a rather pricey christmas this year - but absolutely worth every penny (at last, a gift they can use!).