[fookyong]

This is one of those "mom do I haaaaave to????" pieces of functionality that engineers (I say this as an engineer-type) hate.

I would procrastinate for weeks before implementing something like this. It's boring, complex, and affects a tiny minority of users.

However to engineers like me, we have to remember that even though the number of end-users might be small, in this case they are inherently more valuable than the average user. They bring a cache of readers with them and if they like the user experience, can potentially evangelize the product for you more effectively than someone starting a blog from scratch can.

[danieldon]

As an engineer, I don't think preserving URLs is a minor issue.

[jackowayed]

He never said it was. He said that it affects a small number of users (because most of Posterous users are starting fresh, not moving from a blog that they actually care about) and that it's complex.

[jeff18]

> most of Posterous users are starting fresh

Posterous heavily promotes migrating your blog from other services.