Well, it didn't take long for some enterprising fellow to work an angle:
132.207.114.185 - - [10/Apr/2014:13:17:56 -0700] "GET / HTTP/1.1" 200 20911 "-" "Zeek-heartbleed-notifyer"
Polytechnique De Montreal (computer engineering school in Canada)
132.207.0.0 - 132.207.255.255
132.207.0.0/16
now blocked