I have complaints about Word. I have complaints about McDonlad's... I can be a complainer. But, I've never had a complaint about Notezilla. While I mainly use the software for writing, I also use it to make to do lists, keep track of spending, and grocery lists.
To explain why this is a writer's must have program, lets use some situational examples. Let's say your writing a novel and your main character is a proctologist. Your knowledge of proctology extends as far as a middle school prank where you left a message for your teacher to call James Zass right away and gave the number to proctologist you picked out of a phone book. Time to do some hard research, and by hard I mean, you fired up G̶o̶o̶g̶l̶e̶ your favorite search engine and typed in "What does a proctologist do?"
Because you're a writer of the 21st century you copy and past the good stuff into notepad or some such. But man, all that switching of screens is making your butt itch. Notezilla can stay on top.
You can also link the note to specific sites and documents make research and noting your masterpiece a breeze. Download a trial here.