Remember Me is a simple plugin that gives you the tools to store and retrieve entries, but don't be fooled... it's extremely powerful.
For instance: Remember Me can be used to have a visitor add items to a shopping cart without registering or logging in. After registration you still have access to those entries, so you can put together your order.
Another use for Remember Me could be a list of favorites or a wishlist system. The entries that are saved to the database can be put into separate lists to give you the ability to save multiple sets of entries.
While testing this addon I created a single template which contained all the tags that are available and only call them based on which segments where set (using conditionals) basically creating an API. That template can be called using Ajax which in turn gives you a seamless experience using it.