Things in my life have changed. I am now in a much larger focus on Java. I am still a huge fan of TDD and Test First, but I guess that is a religious thing so I will try to contain my zeal.
Initially the challenges were intended as small problems that should be in the 1-3 hour at most. As well, I focused towards Python and the problems I was using to learn the particular concepts I was working on at the time. Since my shift to Java I am less interested in some of the finer concepts and more interested in general issues. So even though I might find a solution that uses a whole pile of chained references interesting, its solution in some other language may not be nearly as interesting to you :)
I will try to be better about posting more often. Unless I find people aren't interested, in which case I won't waste the bandwidth :)