Reddit's official iOS app has received an update that gives users the ability to more easily share content on the social discussion website with the help of rich link previews. Previously, sharing a link to a Reddit post via a messaging service such as Apple's Messages app only displayed the URL address in the conversation thread, offering the recipient little idea of its contents. By contrast, rich link previews display a visual preview of the post being linked to, including the subreddit name, total upvotes, and comments, providing the recipient with a clearer gist of the content they can expect to see if they decide to tap the link and visit the post. In another update addition, it's now easier…