I've had my website www.worldofnz.co.uk up and running for a while, but am always trying to make little improvements. Today I came across mention of registering as a safe surfing site - www.safesurf.com - for the first time. I figured it could only help me, so went through the registration procedure and added the html code to my site. However, as this was the first time I had heard of this, I am wondering has it just been due to my ignorance so far? Is this an important aspect to include when building a site these days? and is it commonly used?