Comcast announced a 250-gigabyte cap on individual consumer broadband usage this week. The company takes care to demonstrate that this is a generous limit--the equivalent of roughly 125 standard-definition movie downloads. The move, however, is probably only the beginning of what promises to be a long struggle to balance growing Internet usage against limited infrastructure--a problem that TR editor Larry Hardesty described in depth earlier this year. As Hardesty's story makes clear, there's no easy answer to the problem. I expect to see a lot of change to Internet service as providers, companies, and consumers wrestle with one another.