Not needing an app to share location to a requester is cool. I didn't immediately get that this was what the app was for either - the fact that the user doesn't need an app is hidden from the frontpage under the 'more' link. I think if I wasn't motivated to find out what this was for I would have just skipped on to something else. Would suggest amending the frontpage so that users are bashed over the head with this right from the get-go.