It's interesting, this debate seems to come up about every ten years or so. I remember being on an early discussion board on Prodigy (prior to AOL) back in the 80's where the exact same claim was made: 'people over 50 have the highest disposable income, purchase RV's, multiple homes, vacation property, etc., so advertisers and agencies need to re-think their model'. Well after thirty years, not much has changed has it? So fast forward to 2014 and somebody blogs that "boomers" are a valuable and ignored demo are going to change things? Don't hold your breath.
BigA is right: Boomer's preaching to Boomers are fine, but nothing that has any meat on the bone.