Thanks for all the great work people are doing with this board and the development that's going on.
Using the native MQTT code and the Windows Eclipse setup, I've been able to create a simple system using OpenHab to switch an LED on or off.
I've got a very basic write up here https://mydiyelectronics.wordpress.com/2015/01/26/135/, but if it would be useful to someone, I'd be happy to try and write up a more formal tutorial on using the ESP-01 board to control an LED via MQTT and OpenHab using a Raspberry Pi.
Steven