Good word for it.
It is essentially worthless.
That goes too far for me. I use it a lot. It loads the New York Times, Washington Post, my local news sites, traffic webcams, waze for Tesla, etc. slow but fine. For some reason CNN does not load at all so I don't have it bookmarked anymore. It also loads my ip cams and shows live (albeit choppy) video. I can see the tree branches swaying in the wind, the choppiness of the lake, snowfall, etc. If I look on my phone, it could cost me $500 and 3 points. No thanks.
Also, when I'm driving, it's not like I'm sitting at my desk, so the fact that it's slow, while inexcusable, doesn't make it "essentially worthless" to me. I use it a lot and upgraded my vehicle to LTE since every lit bit helps.
This is a good webpage for the browser:
teslapage.com Portal
Someone posted this here, and I used it full screen when my taking my wife out for her birthday:
http://haleslaw.com/candle/candle.htm
So it does have a lot worth, for me at least.