Here's an interesting idea!
If we break the
SEO process down in percentiles, what percentage do you think each
SEO aspects occupies, with 100% being a perfectly optimised site? Obviously this is going to change between search engines so lets stick to the big 3.
I would say Google is:
IBL Links: 45%
Content: 30%
Optimisation (title tags, keyword density, internal linking etc, meta): 20%
Trust / Domain Age: 5%
Other aspects / Validation: negligible %
After doing this i realised...its HARD!
As far as Yahoo and MSN goes, I'm not too sure and your thoughts will probably educate me a little.