I've done it with a number of sites. Closed them down and re-developed them. Some of them were mainstream a couple of them were/are porn sites.

One of them it me 6 months before realizing there was no way it was going to fly. :flogging:

Another one, (recently) after 3 years I decided that enough was enough. :flogging:

It had done just fine in the first 2 years but last year it sucked bad. So it's time to re-develop it.