Many of them were just little tweaks, but a lot -- 16 in our estimation -- had a huge impact on marketers' jobs. The latter are the ones we want to highlight; not just to show how much can change in a year, but to emphasize how critical it is to remain agile as an inbound marketer so you can keep up with all these updates. Plus, if you're not already using some of these new features (or perhaps didn't know they existed), what better time to get started than the new year?" - from source http://blog.hubspot.com
NOTE: Post not only shows new ideas and tech, but also changes in business processes and relationships.
Read more: http://blog.hubspot.com/blog/tabid/6307/bid/33859/The-16-Most-Important-Social-Media-Updates-of-2012.aspx#ixzz2DQwnzk8Y