SEO Myths - Confessions of a Believer

They say confession is good for the soul, and I have something to confess after reading Stephan Spencer's article 36 SEO Myths That Won’t Die But Need To. I was a believer.

I don't mean I believed all the myths but there were some that I still believed.  In no particular order, here they are:

• Your PageRank score, as reported by Google’s toolbar server, is highly correlated to your Google rankings.
• You can keep search engines from indexing pages linked-to with Javascript links.
• Googlebot doesn’t read CSS

There were some that I believed as recently as last year:

• H1 tags are a crucial element for SEO
• It’s important for your rankings that you update your home page frequently (e.g. daily.)

Why am I making this confession now?

To prove a point which I believe in. 
There is always something you can learn.
 
I though I was sophisticated when it came to SEO. I'm not a guru, but have always thought myself well informed. ( I only believed 3 out of the 36 myths, looked at the other way I was 91% right).

No one knows it all. Everyone should keep this in mind when talking to others, and remember there is a chance that what you know to be true isn't.