Alviso, Calif. - TiVo (NASD: TIVO) announced on Thursday the launch of a new service that will offer advertisers access to linked demographic and viewing behavior data for 20,000 volunteer TiVo households. The company said its PowerWatch Consumer Panel will provide advertisers with demographic data like age, income, marital status and ethnicity on TiVo subscribers, combined with data on which programs they are viewing and recording.