I like the simplicity of entries #3 and #4, but I am not sure if it is too simple. We also have 3 other logo contests going on and would welcome your ideas: Harvest, eTV and eUniversity.
made little changes. yes it is simple but it works well in black and white version too. also it doesnt have small sized text that might get lost when scaled down. And it fits very well with the other logos you have