This is a proof-of-concept implementation of multi-selection editing (like in Sublime Text) for vim.
It supports only basic editing using insert mode. Current functionality is demoed in this screencast: http://shelr.tv/records/4fef105a966080237e00005e
Editing multiple regions simultaneously is visually appealing, but I am personally not convinced that it is more efficient than the usage of other vim features (block mode, macros, :s, ...). So I will most likely not put any work into creating a plugin that is ready for daily use. Sorry.