The Google My Business help section added a new page for working with third parties – it aims at giving business owners guidelines when selecting a local SEO company or consultant.
Google wrote:
Here are the five “best practices” Google listed:
Be selective
Work with one at a time
Educate yourself
Trust experience
Evaluate your performance
The document goes into these in more detail, but I wanted to screen shot it just in case Google changes it in the future:
Forum discussion at Local Search Forums.
