You can save any effect or any property with at least a single keyframe on a single layer as an animation preset. I keep a library of presets for my commony used procedures. I've got over 250 (made 8 yesterday for Dynamic Text animations in 3D). I save and store all user presets in a private folder in my DropBox and have an alias pointing to the folder in the default user presets location. (your default drive/your user folder/your documents folder/Adobe/After Effects CS6/User Presets)
When saving to a non standard folder AE will give you a warning, but the Alias fixes that and they show up when you select Animation>Browse Presets. The custom presets also show up under User Presets in the Effects and Presets Panel.
If you want to have your custom presets visible when you select Animation>Browse Presets then create a custom presets folder in the Presets directory in the After Effects program folder.
