I don't mind my friends posting memes, I'm perfectly happy to hit page down whenever people post things like that. And if you're on my flist then I read you every day. But the whole "I'm checking to see who reads me" thing currently making the rounds irks me, because it feels like emotional blackmail.
If you want people to comment then post either things that you think are awesome and worth sharing, things about yourself that you're happy to share, or your opinions.
Not everyone will comment on your journal, because some people just aren't comfortable stepping out in public like that. But that's _fine_. I get occasional surprise comments that make it clear that more people are reading my journal than I might think - they just aren't posting comments here.
Original post on Dreamwidth - there are comments there.