One of the issues in the past for using Khmer Unicode on a website was you never knew which fonts the end-user had.  If they just have the default fonts from Microsoft, they won’t really be able to read your site at all.  Now there is a solution – the Google Web Font API with Khmer fonts thanks to Danh Hong!  If you have a website that uses Khmer Unicode you are going to want to check this out:

VISIT: Google Web Fonts API for Khmer 

Learn how to use these fonts on your website here: Beautiful Khmer Web Fonts