The POD says you can untaint data structures recusrively (and even gives an example). But it *doesn't* work. You can't even modify data at all, according to a bug report. I wasted a lot of time on this, and I bet other people have too.
If you're going to abandon your broken modules, at least have the courtesy to upload a new version with a warning not to use it.
Nice interface (the analogy to File::Find certainly helps) and very straightforward to use, but one thing I can't do is modify the data inplace. I spent about an of hours trying to make Data::Walk do inplace modification, but finally gave up and use Data::Rmap instead.