Sites to break up text into multiple tweets

Can anyone recommend a website which automatically breaks up a block of text into multiple tweets and then sends them, while also allowing them to be sent to a specific user? Little Porkchop might allow the latter using a roundabout method, but I'm not sure if that method will work because you need to ask permission to get "whitelisted" just to begin testing it out, which is a big pain.

Poster :