List creation - the filters at the top of the page allow you to create a preview of your filtered contact list. This list will become usable for for export and email blast purposes once you name and save it.

View list - to view a list, you would select it from the My Saved Lists dropdown. The filters that were chosen originally will be applied and a preview of the current version of the list will be displayed.

Please keep in mind - when you save a list, you are really saving the filters of that list - so when you access it later, you will be getting the most up to date version of the filter results.

The email blast is intended to send a quick email note out to a saved list. If you need to send an HTML email or add/delete one or two recipients of the list prior to sending, you should export your list and use it with another email tool (Eudora, Thunderbird, Outlook, for example).