It might be noticed that the Twitterbox is currently not working. This is due to the Twitter Corporation having deprecated the previous method of authenticating one's account that the Twitterbox used (via username and password) and instead requiring that all Twitter applications use the "Oauth" method.
I'm afraid that I have not updated the Twitterbox to use this, as there are some basic issues to overcome. Either the web application side of the Twitterbox must handle the Oauth side of things, or the LSL side must. Whilst people far cleverer than I have gotten Oauth working with LSL, I am not going to release a script that I do not understand from first principles, and I do not understand LL Oauth from first principles, and I am not going to spend the time required to work it all out, I'm afraid.
The conclusion then is that the web application side of the Twitterbox needs to be updated. This should be quite a bit easier than the LSL route and require less messing about with updating objects. I do plan to do this. An updated HUD will probably be required - I will put this on Xstreet as, as yet, there seems to be no restriction on free items.
The concise version of this post is therefore: "the Twitterbox doesn't work at the moment, I know why, I will release an update but if you cannot wait please do use alternatives".