[Plugin: FeedWordPress] Import Tags from a Posterous Feed?

Hi, I’m creating an aggregating site to collect feeds from a number of different physics teachers posting photos of their classes.

I don’t know whether it’s a Posterous issue or a FeedWordPress issue, but tags don’t come through on the posts from any Posterous feeds. In Tumblr and Blogger, tags are interpreted nicely and new Categories are created in my WordPress aggregator, but Posterous is giving me trouble.

Any ideas why this might be?

The aggregator is here:http://pterodactyl.info/aggregator/
One example of a Posterous site is here: http://todayinphysicsclass.posterous.com/

Thank you!!

http://wordpress.org/extend/plugins/feedwordpress/