Welcome to the Q&A Forum

Taller images are more repinnable - http://danzarrella.com/infographic-how-to-get-more-pins-and-repins-on-pinterest.html

Good question, especially now that Google+ is so important for the Search Plus your World. First of all, brand or personal page. If we are talking about a business company, then I suggest you to use both. Take SEOmoz as an example. If you analyze it, SEOmoz use its brand page (as in Facebook and Twitter) in order to officially communicate things and dialogue with its circle of friends. But SEOmoz employees (i.e.: Jennita, Joanna Lord, Casey, Rand...) use their own account to promote stuff by SEOmoz. Ah... remember to link your site and profile both with the rel="author" and "rel="business" tags (links here: https://developers.google.com/+/plugins/badge/config  here and here. If you are a freelance, like me... then you may try to start using your personal G+ profile (but create you "business" page anyway). Maybe in a second moment you can try to offer a more official presence to your business. About how much content... I suggest you to not vomit content into your G+ pages. It's not the quantity of the things shared, but the quality... and the people you are able to engage into a discussion and into sharing your content that counts. I say this because these seems to be at the base of what we may call the "Google+ Edgerank". And, finally, be active entering in dialogue with others and, if it is the case, citing your content if it is relevant to the discussion... remember, Google+ right now is composed mostly by a public like me and you, who sniff a spam attempt more fastly than any other in the world. And, to conclude, my tip: be a curator. Don't share just content created by you, but also by others and cite the source. This way you may become considered as an authoritative source about your topic, you are noticed and circled by those ones you cite and may have new opportunity of outreach. Ciao