Tell me more about RSS

Sun and Nature. - THe beauty of nature could be seen from this photograh,can you tell me exactly what you think of nature and where it's so beautify.
@alpha7 (1910)
July 25, 2008 11:57am CST
Can you please explain to me what RSS means and why exactly its necessary to have one before you can register your blog with mylot.I have tried to register my blog on mylot on two occassions but it was been refused,although i don't know the reason why but i guess i must have put in a wrong RSS,i use google.
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