The "van" is striking; it's the Dutch version of the German "von". The fact that the former is larger than the latter indicates that the list contains more Dutch UDIDs than German, interesting.
Not necessarily, because "van" is much more common in Dutch names than "von" is in German names. (One reason for this is that "von" used to be restricted to German nobility, while there was no such restriction for "van", and as a result "von" is still relatively rare in German names.)
Additionally, "van" and "von" are possessive pronouns in Dutch and German respectively, which might explain why they are used (e.g. "iPod van Mike" means "Mike's iPod" — the owner may still be Dutch but "van" is not part of his name). Again I think this is relatively less common in German, where the genitive case could be used instead.
The frequency of van/von as part of last names is irrelevant because this is mostly about first names plus possessive markers. Dutch has genitive case on names as well (name + s), so I don't see why 'von' should be less frequent than 'van'.
How does that hellban thing work? I wasn't notified, and that's a pity because I think I have made some valuable comments, and now I realize no one was able to read them? And probably will never try to contribute again since it's a waste of time and is not appreciated.
http://i.imgur.com/k6Cfb.jpg
I had to remove the words: iphone, ipad, ipod and DE as they overwhelmed the display.