I've seen this technique going around a bit at the moment and really wanted to give it a go! I really love the effect that it gives and it really is quite easy to achieve.
Bokeh is a term quite often used in photography.
It means -
bokeh
ˈbəʊkeɪ/
noun
Photography
noun: bokeh
1. the visual quality of the out-of-focus areas of a photographic image, especially as rendered by a particular lens.
If you click here you will be able to see some fantastic examples of the Bokeh at work in photography.
You can also achieve the 'Bokeh' look in your cards too! And it's not as hard as it looks!
This was my first attempt at this technique and I'm really quite pleased with how it turned out!
I used this clip here. Have a look and give it a go and you will be pleased with how good it looks!