Question: > 
> [![User was removed](https://i.stack.imgur.com/KV4hnl.png)](https://i.stack.imgur.com/KV4hn.png)
> 
> 
> 

I woke up this morning to find that I suffered a massive drop in reputation points across the network because lots of users had been removed.

What happened to those users? Was there a database cleanup?

Answer: 
There's no such thing as a database cleanup that would affect reputation, because we don't automatically delete profiles that have voted.

One or more users deleted their profiles, and there's really not anything further we can discuss about the topic for privacy reasons.
I've checked the reputation of many users on ***Super User***. Even the Top three of this month have gone through a negative reputation change on account of user removal.

So, as @animuson stated, probably a user or more having accounts in your and Evan's Stack Exchange sites might have got removed.

[![enter image description here](https://i.stack.imgur.com/PaO4V.png)](https://i.stack.imgur.com/PaO4V.png)

These are from ***Politics Beta***

[![enter image description here](https://i.stack.imgur.com/oEEdh.png)](https://i.stack.imgur.com/oEEdh.png)

These are from ***Database Administrators***

[![enter image description here](https://i.stack.imgur.com/X5LTQ.png)](https://i.stack.imgur.com/X5LTQ.png)

Also I observed that most of the users who have undergone negative reputation changes were somehow there on the sites for a long time and new users have not faced it. So probably the removed user(s) might have not posted any question(s) in the past couple of months.