You can improve the speed in which your post is picked up in search engines by "pinging."

Many blog authoring tools automatically ping one or more servers each time the blogger creates a new post (or updates an old one.) That is, the tool sends an XML-RPC signal to one or more "ping servers," which can [...]

When you rely on tools like IceRocket, PubSub, and Google Blogsearch to do your job, you must rely on their reliability to accomplish your own job.  How do they stack up against each other?
Overall, the blogosphere ping has improved and the improvements lie with FeedBurner and Google blog search. Everybody else has stagnated. On the [...]