This page uses the WScript.Shell ActiveXObject in order to read registry keys (works only on Windows and with IE). You can check it by yourself looking at the HTML code. The only called method is RegRead. Nothing is spread outside; all safe. The read key is
HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\RecentDocs\MRUListEx
which is a sort of array of integer
(terminated by -1), for each of these integers exists a key
(...\Explorer\RecentDocs\INTEGER) of type binary which contains
the name of the recent
file/folder three time, apparently
with different encodings. Here I suppose the first encoding is
two byte Unicode, little endian. It shows properly on my system.
It can take a little bit of time, so let it run even though IE says it slow down something.