From Robin Good's blog, news of two new feed submission tools as well as a manual list to follow in Automatic RSS Submission Tools.
The first is RSS Submit, a $25 product that sends to a variety of feed search engines. The blog post above provides a review of this.
The second is from Thomas Korte, who I've known from his days at Moreover. Thomas moved to Google years ago and also has a personal blog -- hence his interest in feed submission.
His RSS Submission Service is web-based, free, and lets you send your feed out to major indexing tools. Thomas talks about it more here, and he also provides submission tips in Website Promotion with RSS Feeds - four tips.
Back at Robin Good's site, RSSTop55 - Best Blog Directory And RSS Submission Sites gives you a rundown on major feed submission resources along with links. There's more than 55 resources on it now, and you can even take a feed to be notified of new additions and changes.
Meet Your Favorite Search Engine Watch Contributors
Many of SEW's leading expert contributors will be at ClickZ Live, the new online and digital marketing event kicking off in New York (March 31-April 3). Hear from the likes of: Thom Craver, Josh Braaten, Lisa Barone, Simon Heseltine, Josh McCoy, Lisa Raehsler, Greg Jarboe, Dan Cristo, Joseph Kerschbaum, John Gagnon, Eric Enge and more!