[Dismas]

do you use it for programming? not hacking I guess??

personally I think its a great invention I would just never use that thing,
its too much design and too less functionality. I cant either vouch for "Rxsperry wheezy" being the heaviest distro out there.

Unless you're doing something computation heavy, they're versatile and excellent for their price. People use them for small-scale operations like media servers, NAS, pirate radio, etc...

I strongly disagree with you, and I want to attack and slaughter your argument with the fact that such small computers
dont have what it takes for bruteforce operations and penetration testing.
im sorry. but quantity means quality in this case. there is no way you can fit all the datapower you need for that inside that little box.

That's why I used the words "computation heavy". It's not going to be great for cracking hashes, but every tool has its purpose. If your definition of "hacking" is limited to bruteforcing, you're severely limiting your horizons. I'd argue the biggest breaches require the least spec-wise. What makes Raspberry Pis unique is their form-factor and low cost.