Interactive telecommunications researchers designed a soil-moisture sensor device that can allow a house plant to communicate with its owner. The device can send short messages to a mobile phone or, by using a service called Twitter, it can send short messages to the Internet. The messages can range from reminders to water the plant, a thank you or a warning that you over- or under-watered it. (Sorry I couldn't embed the video. I recommend you skip to 29 seconds)
There's a catch.
Each device has to be assembled from basic parts. Each Botanicalls kit is $99.
At that price it makes more sense to me to use Botanicalls for agriculture, so irrigated farmer's fields can text them.
So it's an expensive toy for people who are too stupid to look at their own plants...
That sounds about right.
Anything to make money.
There are plant lovers who haven't got a green thumb. Most of them can't invest the money and effort this solution demands, though. I recommend Cast Iron Plant. It makes up half of my houseplants. Overwater, underwater, little light, lots of light, heat, or cold - these things just keep going.
They're supposed to be tropical. I threw one out in my back garden last Fall and the damned thing grew up there in Spring. It was a mild winter.
This is a cheaper and easier solution.
Of course, not everyone has got a green thumb, I surely haven't. But I make a difference by looking at my plants, by checking water, light and humidity and I always find out from the internet what my plants prefer and what their natural habitat is.