Couldn’t resist the title. I’ve been tinkering for ages trying to get this effect (already passé to some designers).
This only required three layers in the Gimp.
A back ground layer with a radial gradient light to dark purple. Layer mode: Normal
A text layer with the text Gasussian Blurred. Layer mode: Soft Light (others might be good too)
A lighting layer with a FG-BG radial gradient at the bottom and sparkle brushes. Layer mode: Dodge
Sparkle brushes were created by Obsidian Dawn (http://www.obsidiandawn.com) for PS and converted to Gimp Brushes by Project-GimpBC (Deviantart)