Marketers looking to get into the teen headspace will soon have a new tool to work with. MTVi Group, the ubiquitous music net’s Internet arm, has teamed up with Rochester-based market research firm Harris Interactive to launch a subscription-based syndicated on-line poll called YouthPulse, which will check in on a monthly basis with 12,000 young adults ages 13 to 24 via Harris’s Web site (www.harrisinteractive.com). Study findings will be released two to four times a year starting in May, and will track teens’ habits and ever-changing opinions about a slew of topics.

In another on-line joint venture, Reston, Virginia-based PC Data Online partnered with Leading Web Advertisers (LWA) last month in a deal designed to help Web advertisers evaluate the effectiveness of their on-line campaigns. A new service, set to launch this spring, will link PC Data Online’s 100,000-strong sample Internet population with LWA’s advertising tracking expertise. Audience surveys and analysis will be employed to evaluate audience delivery per ad dollar spent.