I recently posted the following on HSM Meta:
The site is fairly diverse, no matter what it may seem. This question on Physics inspired me to post a modified version here, because I think it could be relevant.
The gist of the principle is that users can post information here about their specialties - that is, the areas where they feel they can best post high-quality answers. If there is a question related to a user's specialty, they can be notified, and hopefully post a good answer.
Let everyone know what you think, and post your information below!
As user291957 pointed out, this is relevant on many SE sites. I think it may be especially relevant here, considering the variety of topics we have. So, feel free to post an answer!