We should never underestimate powerpoint presentation, especially when it comes to explain stuff like marketing, branding, ROI, ROE, metrics and online marketing.
At eConsultancy they made available 10 high quality powerpoint presentations about social media and online marketing.
Pretty useful stuff, for instance when it comes to explain web 2.0 to internet-skeptic clients

I visit your blog frequently and its very good , I am not a expert webmaster but i like your blog as its very simple and understandable.. please keep it up , 10/10 marks…