I have kept records of these (and individual visitors), since the 14th september 2007.
Well, I may have had visitors from more than 50 countries by now - this blog has been running since January after all, but I have only documented the 50th today - about 10 minutes ago.
The 50th nation to have visited "Blue-Grey" is....... (drum roll please).....
Someone in Slovenia's capital, Ljubljana (between Vienna and Venice, so to speak, see map) typed "How humans conquered the world" into a Slovenian Google search engine, and decided to pay "Blue-Grey" a visit, (to delve briefly into my New Scientist feed of the same title).
I notice also that they felt they would like to look at my post on "White-Tailed Bumblebees" whilst they were here. Must be a few Bombus terrestris in Ljubljana at this time of year possibly?
Congratulations to Slovenia then.
It may be a wee while before "Blue-Grey" gets its 100th international visitor...
(Don't watch this space)!