I stumbled upon this wonderful photography blog from reading this forum thread about how she doesn't recommend the Canon EOS 5D for weddings.
Yeah – you get to meet all sorts of personalities on forums.
Back to Me Ra Koh's blog – it has tons of useful tips for photographing children. Understandably, it's geared towards Moms in general, but I found the tips helpful too, and will definitely make use of them the next time I take pictures of my twin daughters.