Nice. Credible metrics: sources cited.

iRobot?

Not a bad summary of highlights.

Econsultancy says:

[...] more than two-thirds of companies (70%) rate email marketing as ‘excellent’ (23%) or ‘good’ (47%) in terms of return on investment. While this represents a slight fall from 2011 (72%), this is still a higher ROI than any other digital marketing channel except search engine optimisation (79%).

Small print in infographic says the survey was done in UK, France, Germany in November 2012.

Worth thinking about:

Typical aspects that may affect site speed are server issues, bandwidth, internet providers and a huge topic is load time. Shoppers expect your page to load fast, whether they are shopping on a typical desktop or laptop, as well as mobile devices such as smartphones and tablets. With nearly 10% of shopping now done via mobile device, you’re going to want to make sure your site is up to speed.

Credible metrics and projection, even though no source for any data is cited.

Via Andrew Spong.

Note the top three, in rank order:

1. Facebook
2. Twitter
3. Google+

Common-sense advice.