I’ve never had cable - use the digital converter box and bunny ears. I’m not sure what Roku is - does it let you get free TV? My biggest issue is that I’m going to be moving and don’t want to keep the landline....which means I’ll have to find a free-standing DSL so that I can do the internet. Or else maybe I’ll look into Straighttalk for a home phone “line” and resubscribe to Netzero DSL. But I’m sick of the high Verizon bills for a landline when I hardly call anyone.
Roku basically sits between your internet connection and your TV. You are basically streaming content through the Internet and having it display on your TV. Roku offers an interface for that. Once you hook it up, you can access the home page on your TV and use the remote to add internet channels as you see fit. Some of the channels you need to pay for such as Netflix and Hulu Plus. Many are free.
I also disconnected my landline and use cellphones or Skype only.