RSS Directories

That's my next goal: to sign up my RSS feed to different RSS Directories. I found a couple of links yesterday, about 30 of them. I haven't researched the intensity of the effect of being included in these directories, but I know that it will help increase more traffic. I am not sure if all these directories come for free just like other blog directories, but just the same, I think it's a great step if I'll include my blog on them.