Lua Plugin Enabler
Download for VoodooPad 2.5: http://flyingmeat.com/download/plugin/LuaPluginEnabler.vpplugin.zip (universal binary)
If you are using VoodooPad 3.0 and up, it's included by default so there's nothing for you to download.
The Lua Plugin Enabler lets your write simple VoodooPad plugins in the Lua programming language. If you are looking for a super easy way to extend VoodooPad, this is it.
We also provide a tutorial for writing your own Lua plugins: Hello World in Lua
As well there is a page of useful VoodooPad/Lua snippets for you to take advantage of: Lua Plugin Snippets