Please review WordPress Backups.
With the Blogroll you could categorize your links and then using the template tag, wp_list_bookmarks(), present two different sets of links.
Just add another category and put the links in that category on the blogroll. If your theme is using a simple wp_list_bookmarks() call, then the new category will show up as soon as you put links in it, automagically. If not, you may have to edit your theme or do some work with widgets to make it show up.