Search engines may not be mythical creatures bred for their skills in magic, but they are constantly engulfed by marketing myth. That is simply because the rules change almost daily. The rules you knew from late 2007 have changed and will likely change again before the year is out.
The points below specifically address Search Engine Optimization. Some of the tactics below, such as video marketing outside of context, are effective outside of an SEO strategy. Google and the big engines are making page rank more and more difficult, hopefully these tips help.
Search engine submissions are worthless. Once your site is
indexed, it’s over. Mission accomplished.
Directories are no longer a good source of quality one-way links.
Article submission sites are so inundated with content that any
new articles will be buried on Page Rank 0 pages forever.
Press releases are nice if you just cured cancer but they don’t
help you reach your target audience.
Diverting traffic from blogs is called spamming. It will get you
banned from any decent blogs (the only ones that matter).
For an RSS Feed to work, you need relevant, well-written
content that is regularly updated for your core audience.
Social bookmarking is great IF you to have something of
value to post. You need your own blog to do this effectively.
Getting permanent, one way backlinks from other sites is
ideal, but the only way to get them is to write customized,
individual e-mails aimed at target sites of value.
Using video clips to promote your business is effective IF
you place the videos within the context of your blog. Placing
them in social media sites is not going to have the desired effect.