Multiple accounts verified by a single twitter account.

This may be a non-issue, I just wanted to be sure this was an intended feature and some thought to go into the ramifications of this. Currently it's possible to verify two keybase accounts can against a single twitter account.

see: keybase.io/leedavis81 and keybase.io/key for an example

Review the verification relationship between keybase.io/leedavis81, keybase.io/key, and their single Twitter account. Determine whether verifying multiple Keybase accounts through one Twitter account is intentional, then document the expected behavior and any ramifications before deciding what change is needed.

Written by the indexing model from the issue text.