I do not immediately see what needs to be done to get a one-click add link that I could add to my sidebar. If you know what that would look like, let me know!!
via Zenyenta, where there's an excellent list of requested upgrades to the service:
What features does it still need? Well, the bookmarks are a start, but they need work. They need labels or tags and they either need to be sortable or they need to sort themselves alphabetically. A bookmarklet for adding bookmarks is needed. And finally, a secure connection to the inbox should either be the default or an option.