From Kokua Wiki
Testing Best Practice for Experimental Viewers
Kokua Experimental viewers are tested by the developers for basic functionally. Full regression testing is not done. Therefore, there can be bugs not revealed by basic functional testing.
While the viewer is supplied under LGPL license, which has use-at-own-risk clauses, the Kokuaviewer Project wants our viewer tested in what we think is a safe manner.
Inventory loss is possible while using any viewer, especially one with only limited use.
We recommend that at first log on, a throw-away account be used.
If you want to test these viewers on the Second Life platform, we recommend using the Second Life beta grid (Aditi), so that you don't endanger your main account. To have a copy of your current inventory available in Aditi, change your Second Life password. Then, after 24 hours, your Aditi inventory should be be to date.