Because RSS broadcasting websites provides you free backlinks and and traffic. There are many rss directories available here is some important rss directorieswhere youcan submit your rsses.

Code:

Blogoculars.com
2RSS.com
FeedsFarm.com
RssFeeds.com
RSSaround.com
Feedbees.com
FeedsHoster.com
Plazoo.com
Page2go2.com
Feedooyoo.com
RSSmicro.com
FeedFury.com
Octora.com
FindRSS.net
FeedBase.net
RSSmotron.com
MoreNews.be
DayTimeNews.com
Rss-Feeds-Submission.com
MillionRSS.com
Yahoo RSS Guide
ReadABlog.com
GoldenFeed.com
BlogDigger.com
RSSFeeds.com
feed24.com
88tem.com
WeBlogAlot.com
FeedBoy.com
Chordata.info
BlogPulse.com
DayPop.com
IceRocket.com
RSS-Network.com
Jordomedia.com
Feeds2read.net
Feedcycle.com
FeedShark.BrainBliss.com
FeedPlex.com