I have been providing PPC campaign managment for a number of years and during that time I have learned that the Google Bot and other Search Engine Bots will pay more attention to how the articles are titled, giving more relevance to articles where the first letter of each word is capitalized.  This also applies to your PPC campaign on Google Adwords and Yahoo/Bing Search Ads.  I have also started this very same practice with meta data.  Insdie the meta description I capitalize the first leftter of each word.  So far it seems to be working for me.