QUOTE (redmonke)
Just because it's a netbook, doesn't mean it has internet. Actually, none of these are created solely for internet...
I wouldn't use a small useless netbook, anyways. A 15.4" laptop in my bag would work. If I wanted internet anywhere, I'd buy a 3G card.
I quote from
Wikipedia's article on Mobile Internet Devices (MIDs):
QUOTE
A Mobile Internet Device (MID) is a multimedia-capable handheld computer providing wireless Internet access.[1][2][3] They are designed to provide entertainment, information and location-based services for personal use, rather than for corporate use. MIDs are larger than smartphones but smaller than the Ultra Mobile PC (UMPC).[citation needed] They have been described as filling a niche between smartphones and Tablet PCs.[4]
The clue's in the name; mobile internet devices are designed for on-the-go internet access. They often have 3G cards and support WiFi, meaning that the internet can be accessed almost anywhere.
And the
Wikipedia article on Netbooks:
QUOTE
A netbook is a small portable laptop computer designed for wireless communication and access to the Internet.[1]
Primarily designed for web browsing and e-mailing, netbooks rely heavily on the Internet for remote access to web-based applications[2] and are targeted increasingly at cloud computing users who require a less powerful client computer.[3] Netbooks typically run either Windows XP or Linux operating systems[2] rather than more resource-intensive operating systems like Windows Vista.[4] The devices range in size from below 5 inches[5] to over 13,[6] typically weigh 2 to 3 pounds (~1 kg) and are often significantly cheaper than general purpose laptops at US$ 400,[2] with some even in the US$ 50–100 range.[7]
Netbooks are also designed for mobile internet access. Many have 3G cards built in; with others you can use a mobile broadband dongle or you can connect to WiFi. Most towns and cities have WiFi available somewhere; if there's no public WiFi available, unsecured private wireless networks can be found pretty much everywhere

So yes - ALL of the devices in the poll are designed with internet access in mind, even though that may not be their sole feature. And netbooks aren't useless; they may not be as fully-featured as normal laptops, but they are perfectly capable for their role.