[prawn]

I fully appreciate that subscription plans go some way towards exploiting the laziness of people, but I think you're being a bit harsh:

1. Ultimately, the buyer has every opportunity to cancel the service. I strongly doubt 37signals are going out of their way to make it difficult, as other companies have.

2. If it does what it's meant to do, why would they need to continually update and improve the site?

3. I agree that with a reminder, people may unsubscribe, but it's definitely also possible that people see $99/mo worth of value in their listing. The links are not nofollowed, so the backlink would be worth something. Also, getting a single decent project referral ($10-20k) each year could justify a listing.