Region detect is a plugin for WordPress that detects the country that the current visitor is browsing from. It can display the country to the user; something like:
Hello visitor from %%COUNTRYNAME%%
This is done by using the codes %%COUNTRYCOD E%% and %%COUNTRYNAM E%% in your posts (take out the spaces).
The plugin makes the two character ISO 3166-1 country code and country name available to other plugins – just declare the global variables $rdISO3166_1 and $rdCountryName.