If you have a blog, then you most likely have an RSS feed. Besides using a tool to help you submit your blog's rss feed, there are tools out there to ping your blog's feed.
You may also want to take advantage of the pinging service available from within your own blog, especially if you are using WordPress. There are "ping lists" out there that will help you find which blog services to ping.
There are a few services that I like to add my rss feeds to, as well:
- networked blogs
Don't forget about "syndicating" your blog's rss feed on your other blogs. You can add your RSS feed of your other blog on the sidebar of your blog--so that it's syndicated and the latest blog posts show up there.
Do you have any more ideas of what you can do with your blog's RSS feed?