Another thing to note regarding potential users who aren't as thrilled about what you're creating as more tech savvy people are: consider cell phones and pagers

Another thing to note regarding potential users who aren't as thrilled about what you're creating as more tech savvy people are: consider cell phones and pagers. When these devices came out, they were not exactly the coolest things. Only Doctors and lawyers could afford them, and only they had any real use for the devices. I mean really? Who needs some bulky cell phone or pager with them when pay phones are everywhere? Of course we know how this story ends today. Cell phones are everywhere, and used by everyone. Your job is to convince the average Joe that your application is as necessary as a cell phone.