According to a new report from Forrester, summarized by MarketingProfs, only 13% of B2B interactive marketers say they have increased online display budgets in 2011 relative to 2010 levels, in large part due to perceptions of ineffectiveness. 71% of B2B marketers surveyed say they used display advertising during the fourth quarter of 2010, whereas 86% of B2C marketers reported doing so.