I've developed a native Google Tasks app for iPhone – unlike the google's website it works offline and it's the only app that does so!

iTouch users can now use Google Tasks on the go, which they couldn't before.

Check out [GeeTasks.com] or search for GeeTasks in the app store.

[I've not checked out the app but always be aware of the risks involved if an app asks for your Google account login details... – Tony]

I installed it, and it seems to do its job. I'll post a more thorough review if and when I get time.

It works quite well, actually.
Would like the possibility:
-to indent
-to create new lists (creating new tasks of course already works)
-to reorder or move tasks between lists.

But definitely worth its salf for me.

Is there a stand alone website for using Google Tasks? Like without opening GMail or Calendar...

yes: http://googlemobile.blogspot.com/2009/02/tasks-now-available-for-your-phone.html

Pierre, drop by the forums geetasks.com – there is a discussion there about the new features.

Pierre, I should have been clearer. I meant while on a PC. Is there a (hidden?) site that lets you access Tasks without opening up Calender or Gmail?