Do you need to submit your blog personally to the Search Engines?

I think there is no harm in personally submitting your blog to search engines. In fact, there are webites which will submit your blog to may search engines all at once, and all for free! I think I have put up the link on my blog at http://promoteyourblog.blogspot.com - I can't remember the name of the website offhand right now. Multiple submissions do not harm anyone, so far as I know. That is because when you submit your blog, it just gets added to the list of blogs that the search engine bot (program) has to spider (go through the blog and index it). Free lists can be long, to jump the queue, you may have to pay (the search engine guys).