Hey almost, we're almost getting to put up real-world problems soon! We had a soft launch earlier this week and are working on the feedback.
That said, we've got quite a lot of hackers who solve the challenges for fun :)
I do sometimes (quite often actually) do programming exercises for fun, but if you want me to do them not for fun you'd better at the very least be wasting your time as well as mine...
Original blog post author here. Generally speaking, interview processes have undergone a fraction of the innovation that industry has seen. Hence, After learning about Interviewstreet and checking out all the amazing companies they've partnered with, I got a bit excited but I definitely didn't mean to offend :(
That said, we're bringing in real-world problems pretty soon. Do check it out :)