I just made a few gradients a few months ago: [link]
If you use any graphic program like Photoshop, Paint Shop Pro, Photoplus, etc. You could set the graphic layer to 'Lighten' or 'Screen' -- I basically prefer Lighten, as always, except when tutorials say you have to set it to Screen... >.>
The reason why I like Lighten more is because the black parts go away instantly, and it doesn't change the colour, unlike Screen!
I think I just completely went off the topic there XD
Anyway, I hope you guys download the 'Glow' gradients, feel free to use, as long as you credit me with something