Main focus: moving pictures from other projects to Commons
goal when contributing: to illustrate Wikipedia articles
Upload workflow
watches a lot of articles related to Physics
when he finds an article without a picture, he browses the interwiki links (primarily en.wikipedia) to see if pictures are available in other language versions of the same topic.
moves the file using CommonsHelper (and his TUSC account)
doesn't do a lot of checking except for the license; often keeps the automatically-generated description & categories
then adds the "now commons" template on the original file page.
Other facts
rarely uses the built-in search engine, except for proper nouns
rarely uploads self-created works
doesn't spend a lot of time on Commons
as an OTRS volunteer, he prefers to stick to text permissions, because he finds media-related permissions too complicated.