I like this as an example of how you can do savvy marketing via using engineers to build stuff.  They're in the monitoring business: all it takes is them sending one guy to snap a few of their own APIs together, put a quick design on it, and buy a $10 domain name.  Then release it, promote it a bit, and it gets you incredible marketing returns relative to the amount of effort it took you to put out together.<p>Doing conversion tracking from the mini-site to the main site so that you can justify with real data that your 4 hours of work actually mattered is also a nice touch.  (Check the links.)