Google Trends for websites gives you how each site did for unique visitors and also how they compare on a state by state level but gives no actual numbers and not even a scale – however I can still see it being useful, esp the state by state breakdown. You can also look at how these sites to internationally by selecting each country in the drop down menu –
However, looking at Compete’s chart I’m tempted to think of the ComScore MyMetrix comparison which has much, much different numbers – makes me wonder about the Compete chart because the Google Trends chart much more closely follows what ComScore says the traffic to the 4 sites above is, I’m giving Google Trends the heads up over Compete in “Accuracy” of the data, and least, for now.
Strangely, the Alexa chart gave me the least amount of useful information and doesn’t measure Unique Visitors, so I had to go with pageviews. I suspect a lot of people havethe Alexa Toolbar who used to have it and think Alexa is probably not worth consulting or even comparing here – but I’ll show you the chart anyway: