Today, Google announced the rollout of its Knowledge Graph, which will cause a big change to how results are delivered in the SERPs. Basically, the intent behind the Knowledge Graph is for search engines to think more like a human -- and deliver results that reflect that. It's gradually rolling out in the U.S. as we speak, but you might not see it for yourself quite yet. After the initial rollout is complete, Google will expand the Knowledge Graph to searches on mobile and tablet devices, then to languages other than English.

I've said it before, and I'll say it again. It doesn't matter how great your email marketing is if nobody can see it. And getting hundreds of thousands of eyes on your amazing email marketing campaigns begins with email deliverability.

If there's one thing that makes our toes tingle (other than inbound marketing, of course), it's seeing examples of marketing done right. Great marketing makes us excited to be working in a trailblazing industry where other marketers are doing seriously innovative things to make marketing people actually like.

Looks like Twitter is putting its January acquisition of social news startup Summify to good use! Yesterday, the official Twitter blog announced that it will start sending users a weekly email digest featuring relevant tweets and stories shared by the people they're connected with on Twitter. This just several days after news of Twitter's "acqui-hire" of personalized email marketing service RestEngine.

As the Boston Globe highlighted eloquently on our behalf to announce today's launch of HubSpot's new email tools, email marketing is not dead! But over the years, some less than savory email marketing behaviors by brands -- whether they knew better or not -- have soured many recipients to the email messages filling up their inboxes.