Interesting that they have been able to raise prices over time - a fixed number of cheap seats available at any moment means the more users on the email list, t

Interesting that they have been able to raise prices over time - a fixed number of cheap seats available at any moment means the more users on the email list, the less likely an individual user will be able to extract value from the list - hence list growth actually reduces the value it delivers. I guess fear of missing out is a strong sales tool!