Was looking to ditch WordPress for some time now. Initially thought I'd go for Jekyll, but had a change of heart when I realized it meant I could only write from certain computers, and all I really wanted was to write my stuff in markdown with a simple interface. Ghost fit the bill, so here we are. So far, pretty impressed, but there are rough edges. (I know it's barely 0.5.something)
Loving the default theme and the editor.