You can trust links that you hover over and see what they are at the bottom in the status bar.

Just hover over his link and you see its as he said it is; any link to nvidia.com will be valid. Well you would not go to nividia.spammer.com ...

Its when you hover over a link and the status bar shows 39nvlasdkjf.com/a93ng/inecy and stuff like that then you know you should not click on it.