There's a button to say thanks

To add extras-testing, just go in your app manager, in the menu select repositories>new and enter the following informations :
- name : Extras-testing
- url : http://repository.maemo.org/extras-testing/
- distribution : fremantle
- components : free non-free

Than check you app list : it's full of new apps.

However, those apps can be unstable : check their karma before installing them (you can see it here : http://maemo.org/packages/repository...xtras-testing/)

Good luck !