I would take issue with the 350 word limit, since search engines tend to give more credibility in the 500-800 word range but I would say 300 is a minimum if you don't have much time. Throwing in an infographic or video helps when you have a lower word count.
The Busy Person*s Guide To Social Media - This may very well be the best guide to social media I*ve ever seen. It*s an organized and genius take on how to best harness the various social networks without spending your entire day doing so.
64 Consejos para crear estrategias en #Pinterest #Infografías #socialmedia
How to use Pinterest for Business. Pinterest for business marketing can be highly effective as Pinterest is one of the fastest growing Social Media sites that consumers spend high amounts of time on. Studies are showing that consumers who engage on Pinterest with your small business are more likely to do business with you and spend more money with your business.