Thanks @abit! I asked around in chat for all the Steemit employee accounts and currently have a list of 18. I'll add these to the list.

As to Dan's accounts, since he's no longer an employee and is voting on witnesses, I'm okay leaving them in there. The main reason to exclude Steemit employee accounts is because they are not currently voting for witnesses. I'm not sure if that's a company policy, but there was some talk in chat about it after Charlie Shem becoming the top witness because of their votes.

As to the stale data, I'll have to check with @arcange on how often STEEMSQL is updated. I can get this data myself directly from the blockchain, but it will take much longer to process.