The address tag has no central focus. I work in the address verification industry (postal/street addresses) so I've subscribed to this tag, to contribute where I can. However, I've seen all sorts of topics in this tag:
- Street addresses (actually seldom)
- "Mail address" (whatever that means, but same as a street address)
- Memory addresses / pointers
- IP address / MAC address
- Email addresses
- Address book
- Database normalization
- jQuery Address plugin
- Address bar
I think once I dived into an "address" question that was actually about RAM, but other than that... these topics are far too broad for a single tag.
I know there are all sorts of "ambiguous tag" posts on meta, but I'm not sure myself what to do about this. It'd be nice to clean up or specify more precise tag names.