Traffic tools, fyi

Some tools to estimate traffic on other sites:

http://www.metricsmarket.com/
http://www.trafficestimate.com/
http://www.alexa.com/ ("Traffic Rankings" in top tab)

I've found the first two ok, they give a reasonable ballpark figure and against sites I have the actual data of, they're only out by 20% or so. Alexa's traffic rankings show the spikes but the actual statistics I get for my site don't make a whole heap of sense to me.

It shows



Sorry, cannot estimate number of visits to that site at this time

I tried trafficestimate for my site, it is not that close but it's not that far off either. I find it best to be taken with a grain of salt, but it is a very helpful magic incantation helps dispel the funk fakers.

Thanks !