Just curious as to who has asked the most questions. Lots of people answer questions, but who has asked the most? How do you find out who has asked the most questions?
Taken from the main meta
You can use the Stack Exchange Data Explorer (SEDE) to query sites for information like this. It does require knowledge of SQL to write queries (there is a tutorial under the SEDE help pages if you're interested), but there are a lot of existing queries you can use and you can search SEDE as you can any other Stack Exchange site.
An existing query that should give you what you're looking for:
Here it appears to be @DVK-in-exile, with 664 questions.