After asking in #wowace for a few days how people were moving their game tooltip and not getting any answers, I got frustrated and wrote this simple addon.
You can get it from the SVN in the trunk or from the files page.
Simply install it as with any other addon, then type "/ltd move". Drag the frame around wherever you want and then type "/ltd move" one more time to commit the change.
It tries to be smart about how to interpret the position of that frame. (Thanks to Lozareth's Discord Frame Modifier for that code). For example, if you position the frame in the bottom half of the screen, then the tooltip will dock to the bottom. The same goes for left, right and top.
As simple as that.
Please check it out and let me know if you have any problems or have any comments.
I wrote one for myself too, you may find it useful. It is not ace2 addon, but still it is tiny and have some options http://ui.worldofwar.net/ui.php?id=3142.
I am thinking of doing all my addons an ace addons, but not sure if is good.