staff:

Regarding questions we’ve received about five accounts that were suspended yesterday:

These accounts were suspended by our moderators, reflecting internal discussions about our community guidelines.

I’m sorry for not clarifying these changes earlier.  But after serious consideration, we recently decided that accounts with the explicit purpose of reblogging content in a derogatory way are a detriment to our community.  Although these accounts were removed prematurely, we’re confident this was the right decision, and have updated our Content Policy accordingly:

Harassment. Accounts with the sole or primary purpose of repeatedly harassing or abusing specific members or groups within the Tumblr community will be suspended.

I’m really sorry for the confusion.  Your content and freedom of expression are the reasons we’re building Tumblr.

- David