Google is without doubt the most useful of websites for those of us who know what we are looking for. Type a simple query and a list of accurate results are displayed in a fraction of a second.

Unfortunately most people don't quite know that they are looking for online. Some are in search of fun sites to waste a few hours on while a large proportion want to read interesting news without the boring bits that only other people like.

This is why sites like Digg, StumbleUpon & Reddit have become the webs default resources for people who don't quite know what they are looking for until they find it.

One trend in the years since Digg became a mainstream tech site is that a lot of websites have ridden the wave of popularity that Digg has enjoyed and become major tech news sites as a result.