Forrester released a report today ($279 download if you want it). Titled “What’s holding RSS back?” it claims that only 11% of Internet consumers use RSS and that those who have not don’t understand it. Steve Rubel at Micro Persuasion responds that : “..while feed adoption may have crested the idea of online opt-in communications is just getting going. The Facebook newsfeed, Twitter and Friendfeed are perfect examples of opt-in vehichles that bring content you care about to you. In each case, you’re total in control. You can unsubscribe from individuals or groups and tailor the stream so that what