Passing a Pocket link to someone without a Pocket account leads to a sign-up page. If the recipient already has an account or goes to the trouble to sign up, they're redirected to their own queue, not the linked article. If the recipient goes to the trouble to sign up and pocket the same page themselves they will end up successfully accessing the getpocket.com/a/read/XXXXXXXXX URL that they were original sent.
Pocket is throwing away potential new users who quit at the sign up page and useful information about how existing users share.
Within the last month, they finally added some sharing functionality, but it sends links to the original not the pocket version. Another opportunity to pull new users into a test drive of the product being thrown away.
Lack of full-text search makes referencing anything down the road incredibly difficult. I've ended up regularly importing my Pocket queue to historious [1] to achieve this.
At this point, the only thing that keeps me using Pocket is the very nice Android app.