Is small print in online contracts enforceable?

With some internet companies' terms and conditions being longer than Shakespeare's Hamlet, could it be that "unfair" clauses in agreements are not even worth the paper they are printed on? Terms of service online have been in the news in recent years. via Pocket http://www.bbc.co.uk/news/technology-22772321#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa