When we started Barbados Property Search in 2012, one of our goals was to 'mine' the data from listed properties, primarily to offer the type of analysis that had not historically been shared with the property-buying public.
We recently delivered a project making extensive use of the Drupal Feeds module. While an excellent and hugely time-saving module, it didn't appear to be cleaning up after itself with regard to duplicate files.
! NOTICE ! Facebook have depreciated their old SDK that powered the Drupal for Facebook functionality discussed in this post, so at present, this will not work. We will be updating the how-to shortly to take account of the new API and with a Drupal 7 example ! NOTICE !