We can offer several possible interpretations of the trademarked phrase "wifi to die for" on montanasky.net. Here are a few possibilities:

1. The phrase could be a play on words, riffing off the common phrase "food to die for." In this case, "wifi to die for" would mean that the wifi connection is so good that it is worth "dying for" or going to great lengths to obtain.

2. "Wifi to die for" could also be interpreted as a tongue-in-cheek reference to the idea that some people are so attached to their electronic devices and the internet that they might figuratively "die" without access to them. In this case, the phrase could be a humorous way of saying that the wifi is incredibly important to the speaker.

3. Another possibility is that "wifi to die for" is a marketing slogan or tagline used by a company or brand that offers wifi services. In this case, the phrase could be intended to convey the idea that the wifi service provided by that company is so exceptional that it is worth pursuing or paying a premium for.

4. As "Montana Sky" is a telecommunications company that provides internet, WIFI, IT, IPTV and VOIP services, it is possible that the phrase is being used as a marketing slogan or tagline to promote the quality of their wifi services. It could be suggesting that their wifi services are so reliable, fast, and expansive that customers would be willing to go to great lengths to obtain or keep them.