If you want someone to do something for your benefit or gain, make it easy for them. It's like when you go to donate money to a charity yet rather than being gracious and simply accepting it they suddenly want your bank details too. Or you're in a shop with a basket full of goods yet you can't find the bloody till in the maze of badly organised stock and nightmare floor-plan. Here's another one, some work at home businesses who make handmade things yet expect you to jump through loops to win the privileged of giving them your custom and more importantly money. If you make it unnecessarily difficult, people will be less likely to do it, and rightly so.
It's annoying, it's insulting and it's quite probably halving the amount of comments you would otherwise get.