New York—Forty-five percent of marketers feel optimistic about industrywide marketing conditions over the next six months, according to the Forbes Insights/gyro CMO Index. The index, a new offering from Forbes Insights, the research division of Forbes Inc., and b-to-b agency gyro, New York, was based on an online survey of 875 U.S. marketers conducted earlier this month. On a scale of 0 to 20, with 20 being the most positive, the average score reflecting marketing optimism was 13.6. According to the survey, 39% of respondents planned to increase marketing budgets, 12% planned to decrease them and 49% will keep budgets flat. Also, 54% of marketers plan to maintain their existing marketing staff levels, 36% plan to add staff and 10% are looking to cut.