Blogger calls them Dynamic Views for Readers
Blogger currently offers five dynamic views for its public blogs. These views are only accessible if allowed for by the blog author.
Here's my own blog in each view...
Postcards from Hell's Kitchen in Flipcard
Postcards from Hell's Kitchen in Sidebar
Postcards from Hell's Kitchen in Snapshot
Postcards from Hell's Kitchen in Timeslide
Postcards from Hell's Kitchen in Mosaic
As an example, the URL for accessing the Snapshot view for Postcards from Hell's Kitchen would be http://hellskitchennyc.blogspot.com/view/sidebar.
If you like one enough, you can save the URL in your bookmarks or "Favorite Places" and go to it every time...
These views require modern browsers such as Internet Explorer 8+, Firefox 3.5+, Chrome or Safari. Many elements of these views will not work should you have an older browser.
In all views, search is available in the upper right hand corner. Clicking on the arrow in the very top left of the header bar will slide the header bar across and allow you choose different views for the current blog as well as type in a new blog URL.
Here's more info on Dynamic Views for Authors
