Switching to another skin
You can easily switch between skins without losing any data: only the way things look, feel and sometimes act is different. Even your permalinks stay intact.
Different skins, different rules
Each skin handles certain aspects differently. One might thumbnail images in a sidebar, while the other allows image previews to extend vertically as far as possible. One might display data as part of a billboard, other might render the same data slightly less prominently. Some focus on photos, others focus on posts, all of them mix in pages into different navigational structures.
One thing to remember
Please bear in mind that if you switch to another skin your skin’s settings won’t ‘follow’ you - you will need to start over and upload your logo again, set the colours accordingly, and edit the content in the footer. However, if you switch back to your original skin it will still be in exactly the same state you left it in.