Mamutu Behavioural Blocker - 1 year for free

Yep, the excellent behavioural blocker Mamutu is available for free for 1 year.
Emsisoft, the company behind antimalware program A-squared, is offering their behavioural blocker Mamutu one year for free at Gizmo's.

Mamutu (like ThreatFire) is a behavioural blocker and as is written on Gizmo's;

Behavior blockers detect malware not from their signature but by their actions. That is, they look at what programs on your PC are actually doing and will raise an alarm if that behavior is typical of malware activity.
Because behavior blockers don’t use signatures they can detect new threats not yet in your anti-virus program’s signature database. These new, so called zero-day threats are becoming increasingly common. That’s why a behavior blocker is the perfect companion to a signature based anti-virus program.

If you already run a firewall+HIPS combination like Comodo or Online Armor, this program is pretty much overkill.
But if you only use XP/Vista firewall and an antivirus program, it's an excellent layer of extra protection (with low resource usage).
Read all the details at Gizmo's Freeware.
The offer is valid until August 24.
Cheers.