That's not something I'd advise doing, Elana.

Those "special viewers" are very frequently malware. I'd advise just forgetting it.

Last I checked there is no special criteria for getting a .net domain address. Pretty sure anyone can get a .net address for their site. Only a handful of domains, such as country or government specific ones, imply any more safety than the standard .coms or whatever, and even then there are exceptions (some countries license their domain names to third parties if its a useful acronym like .tv).

I don't know if this is like the free TV apps that appears on Majorgeeks, which are apparently legal, safe and provide access to internet TV, but it would be wise to double and triple check any offers of 'free' TV access before proceeding with it.  There are some legit apps around that provide free access to TV and radio broadcasts, but knowing which ones these are is the trick.... so yeah, always research thoroughly before going ahead, and if you're not sure, don't do it, as Doc advises.  While not all free apps are intended to be harmful and/or illegal, there are many that are, so please be careful.

Upon giving this more thought, one clue that suggests this isn't legit is 'free access' to the Sci-Fi Channel.  Being that it is owned by Fox and made available to cable/setellite viewers [paying customers], it's highly unlikely they'd be giving it away to anyone for free.

I have found, like others I'm sure, that if you wish to watch episodes of your favorite shows you usually can go directly to their site or channel that they are on and watch them.  This isn't true in all cases but it's worth giving it a try.   

@lightstar, thanks, I did not know....