Looks OK is it a better bet than the Ubisurfer Netbook from Maplins, what appeals to me on this is the free surfing for 12 months, but having said that no idea about the quality of the computer never heared of Datawind
The 'Ubisurfer' looks like similar hardware and software to the Linux CNMbook Maplin used to have (they are still offering a few 'B-Grade' specimens of that one), although the CPU is ARM instead of MIPS - and of course it has a 'mobile broadband dongle' built-in and comes with the Datawind/Vodaphone mobile broadband account. I would expect it to be a light-weight and very portable device, suitable for occasional email and web stuff - but not for anything 'heavy' such as the BBC iPlayer or writing the next Great British novel. Yes it runs a form of Linux, but it's such a limited machine, and the software is so heavily customised and locked down, that you won't learn much about 'using Linux' - not much more than you would from your TV digibox or broadband router, which also probably run some sort of Linux.
The EeePC 901 Maplin are selling is a much more powerful and capable machine - and will run a normal Linux distro perfectly well, although Maplin are selling it with Windows XP pre-installed so you'll be paying the Microsoft tax even if you install Mandriva or Ubuntu or something instead.