I was the first in my family to get an iPhone. I got the original about 2 weeks before they announced the 3G. My husband had gotten an LG Vu at the same time. He hated it but loved my iPhone. Although I knew I could take back the original, I kept it to give to my sister & then got the 3G when it came out. My husband got one too & then so did my mother. Since then, my stepfather, my brother, my brother-in-law, my nephew, & my other sister & her husband (my other brother-in-law :-0) all have one. I see them everywhere now. Part of it is, as someone mentioned upthread, that when you have something you notice when others have it too. Part of it is that they are increasingly popular. But I agree with another thing mentioned upthread -- that more people in general have smart phones. I also think that this is the beginning of a shift in portable computing. We'll see more & better things added to "cell phones" & they will become even more like portable computers that happen to allow you to make phone calls as well.