Feedshake with lifehack

Web site FeedShake is a feed merging tool that lets you put several different RSS/Atom feeds together in one master feed. I have some rss subscription on lifehack. Today I merged them in feedshake with url: http://feedshake.com/rss/r9jbnpkc.rss
But it doesn't work anyway. I don't know the reason.

Here is the rss list:
http://www.43folders.com/feed/
http://www.apartmenttherapy.com/atom.xml
http://feeds.feedburner.com/blogtrepreneur
http://feeds.feedburner.com/CareerRamblings
http://gtd.marvelz.com/blog/feed/
http://gtdwannabe.blogspot.com/feeds/posts/default
http://feeds.feedburner.com/HomeBizBlogger
http://feeds.feedburner.com/lifeclever
http://del.icio.us/rss/tag/lifehack
http://api.flickr.com/services/feeds/groups_pool.gne?id=44553389@N00&format=atom
http://community.lifehack.org/node/feed
http://www.lifehack.org/feed/
http://feeds.gawker.com/lifehacker/full
http://hwebbjr.typepad.com/openloops/rss.xml
http://feeds.feedburner.com/ProductiveStrategy
http://feeds.feedburner.com/realsimple/updates
http://feeds.feedburner.com/SuccessFromTheNest
http://feeds.feedburner.com/TheCrankingWidgetsBlog
http://feeds.feedburner.com/typepad/thedailysaint/my_weblog
http://feeds.feedburner.com/To-done
http://ttgtd.blogspot.com/feeds/posts/default
http://feeds.feedburner.com/unclutterer
http://feeds.feedburner.com/WhatsTheNextAction
http://feeds.feedburner.com/younggogetter
http://zenhabits.net/feed/atom/