When you want to create a new mailing list, but your subscribers are already in a different mailing list (or in more than one list) on interests.me, this is straightforward to do.
First, create a new mailing list (with no subscribers in it), give it a name and decide if it is a private or public list.
Next, go into an existing mailing list, from which you want to select subscribers, and select the subscribers you want to move or copy, by using the checkboxes on the left hand side. Then use "Move" or "Copy" buttons to either move or copy the subscribers to your new mailing list. If you move them, they will be removed from the original mailing list. If you copy them, they will also remain in the original mailing list.