Today the Supreme Court rejected the argument that disclosing the names and addresses of people who sign ballot-measure petitions like Referendum 71 violates private, political act protections afforded by the First Amendment. What’s this mean? From now on, you should treat any petition as if it were a Facebook request to “Like” something.In other words, think before you sign.The 8-1 decision to make public the names of people (or bigots, depending on your views) who didn’t want to extend domestic partnership rights to gays and lesbians still doesn’t settle the issue. The keep-R-71-names-secret folks still have the option of asking a lower court for an exemption.And there’s nothing nearly as potentially contentious as R-71 on this year’s ballot. But if a good friend of yours pays rent by stocking shelves at a government liquor store or you come from a conservative clan that wouldn’t look too kindly on your approval of legalized pot, the Supremes’ decision might at least give you pause the next time someone approaches with pen and paper in hand, requesting your John Hancock.