Thanks for pointing that out! And when this was written, Dropbox had been in operations for 11 months...
Joel assumes the reason why synchronization apps didn't succeed was because there was no market, whereas the success of Dropbox proved the market was there alright, it just waited for the right app at the right time.
I've needed file synchronization for my whole professional life, which started in 1991. At first there was no Internet; then there was Internet but you couldn't connect to it at work (imagine that!) and the rate at home was so slow it wouldn't have made any sense to try to exchange files over the network (even when most Excel files weighted 20k).
I used floppies, and Zip discs (remember those?) and removable hard drives, with bizarre synchronization and copying applications that never worked properly and with which you could very easily erase your own files if used in the wrong way.
The day I found Dropbox was like the Second Coming. It was the day I stopped worrying.
I very much disagree with Joel about architecture astronauts; contrary to what we hear sometimes, being early is not the same as being wrong.
> The people? They love twitter. And flickr and delicious and picasa and tripit and ebay and a million other fun things
I would trade a million Twitters for one Dropbox, and I bet I'm not alone. Dropbox we need; Twitter? not so much.