My limited experience of older people and computers has been very positive. All the older members of my family (70s - 89) use computers for email, research, shopping etc. The eldest (90 in June) has been playing with computers for years and until very recently was having fun with programming languages and wrote quite a few simple python utilities. A couple of them use and are comfortable with cloud based tools like delicious. If I asked, I think they would probably give up TV before their PCs and laptops.