Free vector world maps can not be found easily as there are only few around.
I needed a world map for a project of mine for showing visitor activities on a map and found very nice ones that I'm pleased to share with you.
World maps are very handy specially with the increasing use of mapping APIs etc. So, don't forget to bookmark this post (del.icio.us link).
Here is a collection of free vector world maps that you can use in your projects:
Different versions of this SVG World Map can be found at the same address.
(Requires free membership)
You can share the other world maps that you know to make the list better.