Breakdown of the big box parties

Newsweek:

"The long tail is not the political center," economist Arnold Kling has said. "It is not a third party waiting to form. It is not a coalition. It is not a 'silent majority' of either the right or left. It is simply every variety of political belief that does not fit within the two major parties." As the Web allows niche voters to form communities, raise money and get heard, it's inevitable that the major-party machines will clash with—and ultimately accommodate—the individualized constituencies they're struggling to serve.

Basically, the fragmentation of political discourse won't be to the benefit of third party candidates. They won't cohere. Also, in contrast to the conclusion of the article, I'm sure that the big parties can't/won't accommodate these fragmented constituencies. The ratio between those represented and those not represented (due to the structure of the system) will continue to decline.