No More Junk E-mail ?

I haven't gotten any junk mail since July 10.  What's going on?

I have junk mail filters in my mail client (Windows Live Mail 2012).  I began 
filtering junk mail about two years ago.  I used to never get junk mail, but 
for reasons unknown, I started to get lots of junk mail, 10-15/day. I filter 
to a Junk e-mail folder.  Whenever a junk mail gets through to my Inbox, I 
either make a filter and send it to the junk mail folder, or just click 
'Junk', if I'm lazy.

But I haven't had any junk mail since July 10.  I checked my Comcast web 
mail, and there's no junk mail there, either, since July 10.  How about you 
all?