When there is a gold rush, start selling pick axes and blue jeans
blog.urx.com
blog.urx.com
http://cdixon.org/2011/02/05/selling-pickaxes-during-a-gold-...
+ many, many more.
The only ones making money on bitcoin these days (i.e. excluding the early adopters) are those selling the mining machines.
As soon as I saw articles about it, I knew I should write an ebook and sell source for a clone. I saw a few people doing exactly that. Wonder how well they did?