Topaz is a series of Photoshop filters that carry out various functions - smoothing, sharpening, noise reduction, etc.
It has a very distinct look when used incorrectly, as it almost always is, and it is generally looked down upon to overuse topaz on signatures.
To get topaz, you'll need to purchase it, although there is a free trial I believe.
Search Topaz Labs if you want to learn more.
Also, topaz adds MF, which is good when looking for uniques
This post was edited by MidnightRider on Nov 20 2009 10:03pm