The total number of Boxee Box users is low -- only around 200,000 -- according to this post, which uses a company tweet as a source. But that number is "still in line with an industry-wide trend: Smart TV set-top boxes haven’t reached a wider audience, and sales have often been below expectations," writes Janko Roettgers.
Roettgers then reports on other company's somewhat-disappointing sales figures, and concludes that "the only company able to move higher numbers has been Apple."