Yes, they have a season 5, but it's only 3 episodes. One stars Miley Cyrus (and a screenshot from her episode is often used as the thumbnail photo for the series because it's the most recent episode), which I think would tend to put some people off. Don't let it. I think as the show has gained notoriety, it's started to attract higher profile celebrities. That certainly gets more people to watch it, but its a double edged sword because it carries with it expectations/impressions based upon a given celebrity's reputation. And I'm sure it's a difficult show to write for, since you essentially have to create new characters and storylines for each episode, so maintaining a steady level of excellence is very difficult.

Anyway, the show is awesome, but undeniably dark (mostly though thankfully not always). I love (!) technology, and most of the tech displayed on the show is futuristic, but not THAT futuristic as nearly all of it seems realistically possible in the next several years. That's kinda what make it cool to me, since they carry our current tech forward a few generations to show how it could be used to impact our lives (usually in a bad way, but still...).

I'm already a huge fan of the series, just did not know there was a season 5. So now I'll be watching that.

I liked the series as well. Very much like twilight zone.

Yep, of all the shows that have tried to be like Twilight Zone, this one managed it right.
That said, season 5 was my least favorite one - esp the one with the video game dudes. That was strange.