Social network messaging has taken the internets by storm, replacing emails and the long forgotten snail mail. It's easier to stay in touch with short snippets, pokes, kicks and what not on superwalls and private messages, rather than take the time to compose a long-winded email. It's fitting, therefore, that social messaging has gone the way of the email in the number of features and options available. Take the new networking messaging app Sendible, for example. Sendible lets you schedule messages for a number of networks including Facebook, MySpace, and Twitter. You can also use the service for good ole email if you like. SMS works too (it's free and international). So, the next time one of your hundreds of friends has a birthday, don't forget it. Schedule it in months ahead and then feel free to forget. It can link up with Gmail, Yahoo or MSN thereby allowing contact importation and a handy auto-completion feature. It's still in beta, with more features to come.