One other possibility could be mobile broadband, which at the moment is a growing market. The contracts I have seen are for a minimum 12 months, but as long as you up-date the address with the supplier if you move, you can take it with you. The downside is that there are caps on usage. The basic packages are around 3 gigs a month (vodafone who I am with quote this as being 100 hours of surfing a month). This is more than adequate for what I need.