Yo, I'm a Wikipedian from Sweden who's currently part-time drifting, part-time studying.
By the way, if you're interested in historical linguistics, check out the List of common Indo-European roots, along with Ghirlandajo, Imperial78 and Silence, I think I have done most of the work on the page. Although I am not a professional linguist, I have done a lot of research in etymological dictionaries, and I am pretty proud of how the page has turned out.
Also, check out Dysfunktion's table, that looks nice and hopefully is easier to follow.