Many many reasons for dual monitor setups and system info gadgets!
- can watch iplayer, films, tv shows or whatever on the second monitor whilst browsing on the main monitor or doing something else like maybe work
- very useful for following guides when you want to set something up on your PC, be it watching a youtube video guide or reading a word document listing instructions on the 2nd monitor whilst doing the main things on your main monitor
- have winamp with your playlist listed open on the second monitor
- the system stats are actually very useful, especially when gaming as you can see load for GPU, usage for CPU and memory etc. as well as the temps (some gadgets also have built in features where it will warn you when the CPU et.c goes over a certain temp. or the usage is higher than what it should be)
- the system gadgets look damn nice (and are full of features) and don't take half the screen up as opposed to MSI afterburner, windows task manager etc.
- resources wise, it uses virtually none really, with 8 gadgets (most refresh every second or 3 seconds, weather gadget refreshes every 30 min) only 72MB is used and CPU usage is around 1%, so unless you have less than 4GB RAM and a dual core, I can't see it being a problem
And many more reasons!
Essentially all for convenience really.
Although what I find pointless is having all the gadgets etc. on only one monitor as you will never see them with other programs opened (unless you don't maximize the windows), the only time is when you are on the desktop, which for me is only when the PC starts up or is shutting down