OLPC laptops

I just got a reminder email about the OLPC laptops going on sale on Monday at 6am EST. I’ve recently been thinking about getting one. My
primary concern is that it might be too small for me to type on. On the
other hand, it’s not meant to be a primary machine. What do you think?
Is it worth $400 to get a laptop and donate a laptop?
If you aren’t familiar with OLPC, it’s a really exciting project. Check it out at www.laptop.org.