I got an email today from Elsevier:
It is our pleasure to inform you that your publication has been cited in a journal published by Elsevier.
Through this unique service we hope we can offer you valuable information, and make you aware of publications in your research area.
The service is called CiteAlert. It sends you an email every time you’re cited!
Clearly, it’s little touches like this that justify the price gouging and subscription bundling. Kind of like the little chocolate on your pillow at the expensive hotel.
An Ergodic Walk 
Indeed. Although given the existence of Google Scholar, there is free chocolate delivery outside… you just have to go look for it periodically.
Even better, if you set up your Google Scholar Citations profile, then you can set an alert to follow new citations. Google will email you every time it finds a new paper that cites your work.
Last week I got this email:
Scholar Alert: New citations to articles in Kush R. Varshney’s profile
[PDF] APPLICATIONS OF COMPRESSED SENSING FOR MUL-TIPLE TRANSMITTERS MULTIPLE AZIMUTH BEAMS SAR IMAGING
J Li, SS Zhang…
Abstract—High speed analog-to-digital (A/D) sampling and a large amount of echo storage are two basic challenges of high resolution synthetic aperture radar (SAR) imaging. In this paper, a novel SAR imaging algorithm which named CS-MTMAB is proposed based on …