Lenovo Memory Upgrade?

I'm planning to buy the lenovo 320. Can I buy it with 4gb ram and upgrade it when budget allows - is it upgradeable?

Is it legal to buy a domain name similar to a real domain to generate ad revenue?

I'm wondering is it legal to buy a domain similar to a real domain with the intent of generating revenue from Ads?

For example, someone owns lenovo.ca which is separate from the official lenovo.com website. Being in Canada I sometimes go to lenovo.ca, and I'm assuming the owner gets money because of the ads on his webpage. He has not pictures of Lenovo or anything related to Lenovo's intellectual property on his website.

Is this legal? If so can I do the same thing if I can find a domain that is similar to a real domain?

Please Check this PC Configuration?

I want to buy a very cheap PC for basic use.
My main priority is Internet Surfing, Youtube Videos, Word processing.

Intel® Duo Processor E7500
(3M Cache, 2.93 GHz, 1066 MHz FSB)
Intel 41 Series (Redfox/Esonic)
2GB DDR3 RAM
250GB HDD
USB Padless Mouse
Comfort USB Keyboard
Casing with ValueTop Power Supply
LED Lenovo/ASUS
Warranty: 3 Years Service & 1 Year Product Warranty

Is it OK to buy?

Video card compatibility with motherboard?

Looking to get my father a small video card upgrade for his PC for Christmas though I'm confused about compatibility. His PC has one PCI express x16 slot but does that mean I can just throw any video card in there? His current specs:
Lenovo K450
Intel Core I7 4770k
Nvidia GeForce gtx 650
12gb ddr3 RAM
Motherboard chipset? Intel B85
Looking to get him a small upgrade from the 650, just something that can run a game like world of tanks on high at a good 60fps. His 650 currently only gets about 35-40fps on high. What would you guys recommend and what will work with this pc/motherboard?