Today, we are announcing the big news that my company, Return Path, has acquired NetCreations, Inc. Since there ought to be some small perk for subscribing to a CEO’s ramblings on a blog or via RSS, I thought I’d give everyone here the heads up before the news hits the wire tomorrow. (I am fully aware that this is also an excuse for a rare bit of self-promotion, so my apologies in advance.) We are very excited about this move. It puts, under one roof, a great client base and an unparalleled collection of advanced, ROI-generating email services: customer acquisition, customer retention, delivery assurance, and quick turnaround market research. Most marketers and publishers we talk to say the two hardest…