Simply because you always post about current work and interests? Thats also why we read them...

Well, what about remote profiling / profiling server listening to all current profilers (nh, ef, l2s h) all in one?

I did enjoy the reasoning in the posts and I sure learnt some ways to optimize.

because you want to show that you built NH Prof without worrying up-front about small optimizations and then waited until problems arose so you could profile your code and then fix the most pressing issues in as few places as possible for a maximum benefit? As in: the way it should be done :)

You are writing another book. OK maybe another MSDN article.

+1 on Davy

Because you got nothing left to write about? :D

You are doing a Tekpub feature or a course on .NET code optimization

Because you want to advertise your product, make it more visible, show how good it is, sell more copier, earn more money and rule the world, or sth like that ;)

Microsoft want to buy it?

Many optimizations = many posts?

Because so many people get it wrong and you're bored of using slow software?

Because your stroking your ego?

Because you can

Because you were bored and wrote those posts to fill some of the free time you have plenty of? :)

You plan on launching an iphone app of the profiler and thus need to keep resource management tight.

Because you will post a challenge(and a reward I suspect) to optimize some code. An reward from you won't be something easy to get :)

Maybe it is a good way to pump up such skills by yourself?

Because you want to establish yourself as an expert in the field and want to do some contract work optimising other peoples .NET software.

Well?

<conspiracy
Discrediting the most outrageous option. That must mean it's closest to the truth.

Though I'd think the only thing more mind-numbingly boring than performance optimization would be writing about performance optimization... Are you sure you don't just want to be a lion tamer? :)