At the TeX SO it's usual to mark questions that led to new packages with a little box, like this:
This question led to a new package:
packagename
> **This question led to a new package:**
> [`packagename`](http://www.ctan.org/pkg/packagename)
I think it would be nice to do the same here and mark the questions that led to new plugins. Then, as it's mentioned in the posts linked above, we could search for "led to a new plugin" and see all the plugins that originated at the Vi SO.
this would also be useful for future users who get here looking for answers to the same questions. Instead of reinventing the wheel, they'll quickly find out there's a plugin that does what they want.
Edit:
Here are a couple of examples:
This question led to this plugin.
This question led to this plugin.
These questions helped with this plugin.