Of course, they can only claim to be the best bookkeeper in Toronto if they were the only bookkeeper in Toronto and as that seems unlikely then the ad is claiming unfounded superiority of one's own services which contrevenes S250 of the IFAC code of practice in relation to Marketing professional services.
As such the link / attempt at SEO has been removed.
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Shaun
Responses are not meant as a substitute for professional advice. Answers are intended as outline only the advice of a qualified professional with access to all relevant information should be sought before acting on any response given.