One person builds this, so the queue is short and so is the reply time when there is something to reply to. Bugs are the most useful thing you can send; feature requests are the second.
What you want to be able to do, and why. The why is the useful half.
Sent with your message: your browser, your window size, the page you came from on this site, and a one-way hash of your IP address that exists only to stop this form being flooded. You are not signed in, so nothing here identifies you beyond whatever you type.