"Author score" is a device, used by free writing sites, to rank their authors.
At Hubpages you need to reach an author score of 75 for any out-links to bite.
This is to ensure that occasional authors (read spammers here, if you think that to be relevant) do not gain any benefit from back-links just by authoring a single article.
They must prove to be of value to the site.
I have not seen any information here on Wizzley saying that it is the same.