Is page rank (PR) important to you? Is search engine optimization (SEO) a goal of yours?
Then you need to let the major blog services and search engines know that your blog has been updated. You should be pinging a large number of these services each time you post something new on each of your blogs, and also each time you reply to a comment.
There are quite a few pinging services, but these are the ones that I have found most reliable and easy to use:
Maybe you have some other pinging services you would like to recommend?
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SEO, page rank
BLOG VILLAGE was established on May 23, 2006, currently with a membership of 190 Villager blogs.