Search algorithms & popularity factors: link, social, click, blog, industry. Since modern search engines are concerned with popularity and not direct relevancy, & big firms up the price of text link buying beyond affordability...
To develop systems that will help both public and private sector organisations account more accurately for the wider social and environmental costs of their activities.
You are in a dimly lit room. You are alone on a stage before an audience of 1,000. 10 minutes into your presentation, your hands no longer shake or sweat. This is going well, you think. But just then you notice a vaguely familiar sound--tap, tap, clickety