Hi David,

I don't believe it has anything to do with bridges being blocked.

Here's what I know: There was a few days downtime at the end of August for the first-listed FTE bridge in the Tor Browser. However, not all FTE bridges listed in the Tor Browser were down at that time. It should have been the case that failover worked properly. So, my guess is that (1) some of the FTE bridges listed in the Tor Browser are not properly reporting stats or (2) failover isn't working properly.

It's on my TODO list to investigate this further.

-Kevin

On Tue, Sep 16, 2014 at 2:51 AM, David Fifield david@bamsoftware.com wrote:

Kevin,

Do you know the reason why FTE usage dropped from 200 to about 50 at the end of August and then recovered again?

https://metrics.torproject.org/users.html?graph=userstats-bridge-transport&a...

I had a guess that maybe it had to do with availability of new bridges. If a bunch of bridges got blocked and then new bridges were made available, that could explain it. The 4.0-alpha-2 release was on September 3, but as far as I know it didn't contain new FTE bridges. They could have been added to BridgeDB, I suppose.

David Fifield