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?