Privacy and security concerns are two of the biggest roadblocks to SOA adoption. Many customers simply refuse to store important data on the cloud. The current spotlight on Facebook's Terms of Service fiasco can only hurt enterprise adoption of Web Services.

Those important business documents you have on Google...  Would you be as inclined to still use Google Docs if you understood that "Google reserves the right (but shall have no obligation) to pre-screen, review, flag, filter, modify, refuse or remove any or all Content from any Service?"   I surely do not want Google modifying any of my content.

That great idea you posted on LinkedIn? It's not yours exclusively anymore. Says their ToS: "You do not have to submit anything to us, but if you choose to submit something (including any User generated content, ideas, concepts, techniques and data), you must grant, and you actually grant by concluding this Agreement, a nonexclusive, irrevocable, worldwide, perpetual, unlimited, assignable, sublicenseable, fully paid up and royalty free right to us to copy, prepare derivative works of, improve, distribute, publish, remove, retain, add, and use and commercialize, in any way now known or in the future discovered, anything that you submit to us, without any further consent, notice and/or compensation to you or to any third parties."

It does not take long for users of an online social network to migrate.  Does anyone you know still use MySpace?  Or are they on Facebook now?   Web Services simply have to pay more attention to Terms of Services - it will cost you customers.