I've had a del.icio.us account since the beginning in 2003 and migrated to Pinboard last year. It's a worthy replacement and everything Delicious should have been, with something approximating the UX from the older service. And Maciej and pvg are very responsive on Twitter.

I'll second that. I've been super happy with pinboard. They personally helped me track down some technical problems I had importing my delicious, and haven't looked back.

Hey, thanks! I'm really glad you like the service.

The payment model is @joshu's idea

Another vote for Pinboard. Been using it for some months now and I love the minimalism. I've had one occasion to contact support and my issue was very promptly addressed. Highly recommended.

@idlewords: just make sure you're ready for the possible flood of new users. :)

I've been using pinboard for about 9 months and I promote it every chance I get. Love this service.