IEMate

Key Features:

It is a light weight plug-in of Internet Explorer.
It has the following features:
Block the annoying popup ad/ads windows;
Block Messenger Spam(which is getting popular today);
Disable Load/Unload JavaScript;
Control the images size that you want to download (This function is useful when you are using dial up to access internet);
Save bandwith when you surf on net;
The most important feature is: It's small and smart,
It never interferes with normal browsing.