It would be great if we just had *websites* and left the "optimized" part out (or modeled it differently). Platform support may suffice for what we've defined thus far for being "mobile-optimized" (works on) or "tv-optimized" (made for).

Fortunately, our model is already pretty generic. It's called `Website,` the mobile-specific part is just `mobile_url` (which is optional, the main field is `url`). And we have a `devices` field that indicate what devices each site is suppposed to be compatible with.

Playing it safe, let's just add a 'tv_url' and use the 'devices' field.