Google keyword: Pepsi | MetaFilter
http://www.metafilter.com/109207/Google-keyword-Pepsi
Two weeks ago, Google disabled the + operator for searches, requiring quotation marks to force inclusion of a word.
Today, Google Plus rolled out a new feature - Pages for companies and brands, so you can "build relationships with all the things you care about". Included is Direct Connect - go straight to Pepsi's Google+ page by searching for +Pepsi.