Does everyone enter all the data? I've really only been doing airport, airline and date. I might go back and make notes of what certain trips were for, though.

I hate that I don't have all the information on flights I flew as a child. How do people do these from memory? I'm lucky if I can remember the year! I thought for a second I'd found a way when I remembered that my dad's miles are through USAir and I had an account through them since I was 9 (though I don't really use it now), but their online stuff only goes back a few years.