Sometimes I don't know which Stack Exchange website is suitable for my question. For example, in the past, I had a question about anonymousness of VPN. I asked this question on Network Engineering. But guys told me that is an off-topic question. Finally I found it is suitable for Information Security and got a good answer there.
So I'm wondering if Stack Exchange could add a function to provide suggestion about suitable website based on some information. I guess the easiest one is tag. If I add "networking" and "anonymous" tags, it could suggest me to ask this question on Information Security.