The best strategy is to ignore search engine submission completely. Search Engines have what are called spiders, that will crawl the web, following links. The best option is to submit your site to as many free directories as you can. This will ensure that your site eventually gets crawled in a timely fashion.

Be wary of sites that claim to submit your site to "300+ search engines and directories" for free, or $99.99. Whatever the case, these sites are usually automated submission scripts which boast high rankings and gold at the end of the rainbow. I assure you, they do not deliver, and you're out the money. The problem is that it's an automated process (non-organic). The fact is that these directories and search engines change their submission procedures quite regularly, and in reality, it's impossible to keep an automated submission script up to date with thousands of sites. Plus, as we described above, submitting to search engines is a waste of time, since they will eventually crawl your site if you have good inbound links.