A while ago I've added a new section to my website, Blog → Map, which shows all places I ever blogged about. You can view related posts by clicking a place marker:
A reverse functionality has also been added to blog posts. At the end of every text you can see a new section, which is only visible in the single-post view mode:
For the nerdy ones I have to say that I'm making use of the Yii extension called EGMap. It also provides a clusterer, which merges adjacent points into one spot at smaller scales.