Hot on the heels of Nielsen's mobile media tracking announcement, InsightExpress just launched their own toolset, MediaPost is reporting. Ad Infuse will be the first advertiser network on mobile to offer the tool to their clients.

"While research groups like eMarketer predict mobile ad spending will grow from $421 million now to $4.8 billion by 2011, advertisers and ad agencies are struggling to make sense of how to allocate those dollars effectively--and how to determine benchmarks for ROI," MediaPost reporter Tameka Kee said in the story.

With these new advertiser tools in place, now we just need some solid metrics to analyze mobile Web site traffic - because we're currently flying blind, as Time Inc mobile business development VP Scott Williams recently pointed out.

InsightExpress Launches Mobile Media Measurement Solution [MediaPost]