Hi all, I have been a SEO expert based in Auckland New Zealand since 2000. Working with large corporates I often get asked to suggest SEO friendly CMS's
Silverstripe has been on my radar for a while.
I do however have a suggestion and after reading your "Web content best practices" page it would apear that a certain amount of misinformation has taken place as to what Google considers good SEO practice.
I refer to this statement in yellow on this page: https://userhelp.silverstripe.org/en/3.3/creating_pages_and_content/web_content_best_practises/?success=1#Form_QuickFeedbackForm
Notes

The meta fields for title and keywords have been removed in v3.1. Keyword have been removed due after an official Google press release which confirmed that Google doesn't use the keywords tag anymore (see link.
Google doesn’t like repetition of keywords and phrases in the description. It sees this as 'keyword stuffing', which is looked at as search engine spam (not good!) Avoid this."

Correct the Keyword tag has not been been used by major search engines as far back as 2002 however the <title>My Home Page</title> is the first port of call for all major search engines. How to compose these as per Googles guidelines is a separate discussion.

http://addons.silverstripe.org/add-ons/kinglozzer/metatitle
Has gone some way to resolve this but only available for older versions.
My suggestion is reinstate this in the meta tags field above the meta description field as a standard in the CMS that is INDEPENDANT of any on page HTML/H1 etc.
Eric Rudolphe
Moving Web SEO