Do you contribute to Wikipedia? If the answer is yes, please provide the most primary articles where you regularly collaborate.
I only recently started actively participating, due to holidays, and learnt everything there is to it.
The article I'm most proud of is this one:
Swedish language
Why? It has become a featured article! Kayobanga! Yosha! I contributed most of the maps and quite a bit of the writing.
Other notable articles which I have written or contributed to:
Languages of the US - Swedish, German and Dutch
Swedish-Americans
Swedish-Candians
Finland-Swedes