Considering he is no longer a user here is the previous text:
An obscure background and theme that is out of the ordinary, usually characterized by its depth.
A unique style of adding "smudges" to a sig in order to give it a manipulated feeling, this style could be done on top of grunge, tech or any other style.
Uses simple colors and designs. And has a very artistic and aesthetic sense.
Today's style of grunge, its a bit more advanced and uses more techniques.
Uses a mixture of vibrant colors to create a eye-catching sig. Features of the sig are usually distorted, and colors most often used are red, green, and blue.
Creating a sig by using photos of pictures of whatever or making something realistic that looks like a picture.
Adding 3D elements to an abstract signature in order to give further depth and create a different sense of atmospherics.
Characterized by giving a smudged painting look. Must not be confused with vector which uses well defined edges rather than blurry, smudged found here.
Does not have any render, cutouts or "external" pieces on top of the background or merged with it.
Gives an appearance of a dream based on blur or "clouds" around the signature which give it a nice aesthetic feeling.
Old School Grunge
Called old skool because over a year ago, grunge was the major style and uses little technique.