You can search users for their expertise by country and by topic (theme). The ranking of users is based on the scores others attributed to them. It is not possible to objectively judge upon anyone's expertise, so that there will always remain a good degree of subjectivity. The automatic score is based on ratings, number of ratings and months passed since each rating. In any case only ratings above 0 are shown below.
|Username||Sendmail||Score||Rating||# ofratings||# offollowers||Country||Region||City|
|Standage||73.3 %||5.0||1||0||United Kingdom||London|
|Jay||68.1 %||4.5||2||0||France||Bouches du Rhône||Aix-en-Provence|
|lean||49.5 %||2.5||6||0||France||Provence Alpes côtes d'Azur||Aix-en-Provence|