3) Search engine marketing services providers – Shar VanBoskirk covers this market, but I’ve found companies like Reprise Media, IMPAQT, iCrossing and iProspect doing a lot more to help B2B marketers understand how to turn search optimization or paid clicks into qualified leads. As you point out, the best B2B marketers are those who can profile their target markets based on needs, behavior, motivations, and aspirations, not just by firmographic data or according to the geography or industry in which they fall. Most recently, Marketo just announced their lead management solution.