Pandora asks listeners to share their e-mail addresses with Romney

Pandora's targeted e-mail sharing pitch isn't new, but it's being offered to political advertisers for the first time this year, a company spokeswoman said. Both Democrats and Republicans, and both local and national campaigns, have used the service to collect voter e-mails. It's among the latest in a series of increasingly sophisticated tactics that campaigns are using to target narrow groups of voters online — from sending ads to Internet users who have visited a candidate's website, to creating a mobile app for campaign volunteers that marks the names and addresses of nearby voters on a Google map.