Number of searches of the term "E-Cat" according to Google Trends
The interest in the "E-Cat", the supposed "cold fusion reactor" invented by Andrea Rossi and Sergio Focardi, is waning. You can perceive that clearly from the activity of the various sites dealing with it; while "Google Trends" confirms that the trend is indeed down. After a flare of curiosity that peaked in november 2011, people found that there was nothing to see about the E-Cat except some purported "demonstrations" that didn't really demonstrate anything. So, they lost interest.
What remains of the E-Cat is a core of diehard supporters - especially in Italy. - who will likely keep the myth alive for a long time. It is typical and well known: "free energy" theories never die. Today, people are still discussing the supposed free energy devices attributed to Nikola Tesla and that go back to almost a century ago - poor Tesla is probably still rolling over in his grave. And, in the meantime, plenty more cranky theories have been proposed. In this field, the E-Cat will remain remarkable for the amount of noise it generated when compared to what little evidence (actually, none) was presented.
About the E-Cat, you may be interested in two well thought and in depth articles that demolish Rossi's claims at their basis.