This has been addressed in the past. Nonprofit is kind of a "loose" term that they use.
http://debatewise.org/debates/3230-wikileaks-is-not-and-has-never-been-a-non-pro fit-organization/
Far as I know they aren't legally a "none profit" in the USA but Sunshine Press does have a legal none profit status in the USA.
One could really argue either way which people have. Some people point out this alone makes them not really none profit. Others point out it's somewhat a moot point because the whole idea of WikiLeaks is to circumvent corrupt law and their funding comes from private sources/donations. Not from services. So they consider themselves a non profit and their owner is. Just wikileaks itself would have difficulty getting non profit in many places.
So eh, like you said draw your own conclusions. To me, it looks weird, yeah, but not really damning evidence. If there was a conspiracy of Assange being in bed with anyone it's doubtful he would have been licked up in the Eucadore embassy for years. Though not impossible.