Hi Frank - Sorry that was a bug.
It should be fixed in the download below - to make the parameter name a bit more consistent I’ve renamed it author rather than author_id.
There are a couple of extra new parameters to allow more flexible categorization of entries. Firstly:
category provides a default category (id or name) to put all new entries in
Alternatively, you can use category_field and category_group to select the category on an entry-by-entry basis
category_field selects which field of the feed to use for the category. The field will be treated as comma-separated data so “Arts, Science, Technology” would add the entry to all 3 categories. New categories are created if the don’t exist.
category_group is the id of the category group that you want new categories added to.
As usual, let me know of any problems.
Andrew
Edit: Please see the FeedGrab page to download current version