Seth Godin has written a really nice post called, "Open Big" that captures the paradox between our thin-slicing, instant analysis culture and the snowball effects that play out in the online world.
Netting it out: the conversational and cross-pollination models playing out in the blogosphere right now are very much akin to water dripping on a stone. If you have a thesis that drives you and you are willing to work that thesis with discipline, substance and passion, maybe not overnight but over time, gravity will become your friend. That has been my experience time and again.
Thus, stealing an analogy from one of my favorite books, "Built to Last," strive to be a clock builder, not a clock watcher.