The first thing that came to mind when researching this was "what's Zabbix?" - and in answer to that - "Zabbix is an enterprise-class open source distributed monitoring solution for networks and applications". Basically it allows you to monitor data from devices over the Internet. And thus Arduino forum member 'levkov' has published details of his own Zabbix agent built around an Arduino Mega with an Ethernet shield and temperature-humidity sensor. The hardware assembly is incredibly simple, and they've also published the required Arduino sketch and example to get you going. Below is an example of the output from the service:
So once again we have a great example of Internet-connected devices and Arduino. Click here to get started with your own version, and for more, we're on twitter and Google+, so follow us for news and product updates as well.
In his project levkov used a separate Arduino Mega and Ethernet shield, however you can save time, money, space and energy instead by using the Freetronics EtherMega:
Quite simple the EtherMega is the fully-loaded Arduino-compatible board on the market today. Apart from being completely Arduino Mega2560-compatible, it includes full Ethernet interface, a microSD card socket, full USB interface, optional Power-over-Ethernet support and still has a circuit prototyping area with extra I2C interface pins. So if your project is breaking the limits, upgrade to the EtherMega today.