Originally Posted by V_RocKs

Yes... Powerpost2000 is by far the easiest, but AtomicPost and NewsRocket have the most features, including embedding a link back to your site into the post (which is only viewable in certain readers)...

You should post around 9:45PM EST so that your posts will be shown "the next day" at 12AM starting with the East coast. Remember it takes hours to propegate through the servers... You are basically trying to get into the first posts for the day, before the copywrite infringers do.