Since it seems that this program is against the TOS, and it hasn't been explicitly approved by Blizzard (at least not yet), then we advise people not to use it until you hear more information. We would hate to see people banned for this. Warden (the part of WoW that looks for stuff like this) might not like the looks of what this program is doing, as what it does (it seems to read from what WoW puts into memory?) is against the TOS.
The link will be removed from the first post. If Blizzard officially and explicitlly approves of what this program does, or if they change their method of acquiring their data, then (and only then) will we endorse this software.
Blizzard is not SOE and WoW is not EQ. Just want to be safe, people.