This would be great and extremely useful if it didn't produce a single immensely long page which then takes an eternity to load due to it's sheer size. There's no means either of emptying the list, other than perhaps regularly going to the database itself and emptying the table - that is, if one has access to the database to be able to do so, which not everybody has.
If the above could somehow be fixed in some way, plus have an additional feature to not include certain IP numbers or search bots, it would be worth using for those who need to trace users.