I've also made something like what other people here have made. A 'plug-in' solution to authenticate logged in users (and of course log in users etc.). It's really easy to write an application to use it, too.

It doesn't have many features yet, because it's still very simple. But it uses cookies like merlyn recommends in his WebTechniques column.

Lur: "But if this cape shrinks, consider your species extinct!"