Neat!
But I ran into a few issues.
1) Facebook login does not work, I used Twitter
2) The first time I clicked the Wish bookmarklet on an Amazon product, it just froze, had to do a it a multiple times
That said, I can see it using regularly, definitely better than placing items in 'Save for Later' list on Amazon
Edit - I am currently a camelcamelcamel user, I love the price tracking on that, do you have any plans on adding that feature