I am the author of that blog post.

At the time that post was written, their privacy policy never stated that they collect this information. It seems to have been updated since to say that they do in fact collect this information, but they don't offer any insight into how long they store it for. Their privacy policy now states:

  "We collect and store information regarding your use of 
  the Boxee Platform, including (i) the content viewed, 
  (ii) the time and date of each viewing, (iii) the 
  application used in viewing the content and (iv) IP 
  addresses, including internal IP addresses, of devices 
  accessing the Boxee Platform"

Also, as I wrote in my blog post, they never responded to my questions that I sent to privacy@boxee.tv.

I find this in their privacy policy quite interesting:

  While we collect and store IP address information, that 
  information is not made public. We do at times, however, 
  share this information with our partners, service 
  providers and other persons with whom we conduct 
  business. We may share hashes of your IP address with 
  other third parties, but these hashes cannot feasibly be 
  reversed into the IP addresses themselves or linked to 
  you individually.

I bet they've done this wrong. "Protecting" data by hashing it doesn't work when the number of possible hashed items is small. There are only 4 billion IPv4 addresses.

I just don't trust them.