Well, we're here to say it's all going to be okay. As with any new, cool feature, the interest will quickly peak, be discussed (as we're doing now), and wane faster than you can cruise down the Danube.
Still, even though Photo Maps have caused the resurgence of the green monster of envy amongst travelers, we see one very big positive: Photo Maps prevent Instagrammers from flat-out lying about their travels. It's one thing to upload a shot of a picturesque gorge somewhere deep in the Amazon, but it's another thing to have actually been there and be sharing something original of your own. As we're all aware, Instagram is full of users who simply post pretty pictures, even though the idea is that of unique images. If someone didn't take the photo at that spot, with their smartphone, then there won't be a way to geo-tag there either. BLAMaccountability.
Maybe we're being too stuck up about Instagram, but we just love it so dang much. Peace, ya'll.