I was asked to change my location and timezone to reduce stop blogger hunting in Iran.

Here’s the original message:

If you’re on Twitter: set your location to Tehran and
your time zone to GMT +3.30. Security forces are
hunting for bloggers using location/timezone searches.
The more people at this location, the more of a logjam
it creates for forces trying to shut Iranians’ access
to the internet down. Cut & paste & please pass it on.