>and guys, do you buy a third party software to post to these
>blogs using the main.xml main2.xml and main3.xml? if so ,
>any recommendation of a good software?

Hi Chris,

For Blogger blogs, you may want to try this WSO:
http://www.warriorforum.com/forum/topic.asp?TOPIC_ID=210305

I bought it, but haven't tried it yet...

It's only $12, and is supposed to add updates to blogger blogs using RSS.

The main problems as I see it is that it is a hosted script, which means it uses your hosting IP to update your blogs. Having 100 different blogs all updated by the same IP probably isn't a good thing...