When you look at your likes by using "votedup:anything" are there conditions you can put instead of "anything"? Does "anything" mean anything? Can I put something else after "votedup:"?

Admins can view a user's post votes by using votedup:Lafcadio.
Users below that rank can't view other people's votes, and you can do standard tag searches like votedup:auto_moderator female.

As mentioned above, certain staff can insert any username, but for normal users the text inserted actually doesn't matter. You can put literally anything and it will work. The text is ignored for normal users.