Twitter blocked at school

I recieved an email last weekend from Learning without Frontiers, with the best piece of email advice I've ever read!

It was regarding not being able to open the document to print tickets for the event, and said "Contact your IT Network person and ask them to allow you access to the 21st Century!"

I feel like this about twitter. I can't access it at work, yet twitter is probably the greatest piece of CPD anyone could ever find! You learn so much, share ideas, find out about amazing events to name just a few.

I'm wondering how I can get around this (without forking out for an iphone contract). I've not got any ideas at the moment but may well look into it further.