I like how simple it is, you can easily customize your own invite box with multiple different options such as sharing status updates or inviting people directly through social media platforms (Facebook/Twitter). The only thing that could be improved would have been if there was an option of having more than one link per page so we didn't need two separate invites before each other person clicked theirs - but maybe this isnβt something they will ever implement? Definitely try out their freeβ¦