Forum Moderators: open
The UA is just that: "DiamondBot".
All requests came from the IP 64.152.73.15 which belongs to Gator:
$ whois 64.152.73.15
Level 3 Communications, Inc. LC-ORG-ARIN (NET-64-152-0-0-1)
64.152.0.0 - 64.159.255.255
Gator.com LVL3-GATOR-01 (NET-64-152-73-0-1)
64.152.73.0 - 64.152.73.255
See also: www.webmasterworld.com/forum39/2573.htm [webmasterworld.com]