Hey,
Great idea for a Feeds parser. When I first installed the module and tried to select the Facebook parser, I got the following error messages:
Missing Feeds plugin FeedsFacebookParser. Check whether all required libraries and modules are installed properly.
Status message Changed parser plugin.
Error message
Notice: Undefined index: FeedsMissingPlugin_feeds_form in drupal_retrieve_form() (line 736 of /Users/benkaplan/git/commerce_quickstart6/includes/form.inc).
Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'FeedsMissingPlugin_feeds_form' not found or invalid function name in drupal_retrieve_form() (line 771 of /Users/benkaplan/git/commerce_quickstart6/includes/form.inc).
This error message eventually went away, but I'm not sure why. Any reason why the cache would need to be cleared (or something similar) before this module will work properly?
--Ben