I thought the answer was obvious: she's fucking hot. There's an article on Dramabeans about Kim Tae Hee's drama comeback and I happened to see these comments. Naturally these kinds of comments sprout up all the time regardless of who it's about, but it's almost impossible to read a Kim Tae Hee article without seeing comments like that.
For example, when this blog was still new and no one read it, David used to write a shitload of articles about how ugly G.NA is. It doesn't make his opinion right, and it certainly didn't stop some people from thinking she was hot, such as sullifag when he made this photoshop edit of G.NA (NSFW!).
In the end, more people than not think Kim Tae Hee is fucking hot. I'm one of those who thinks she's hot or else I wouldn't have made AKF's background of Kim Tae Hee sucking a popsicle. Enjoy some KTH CFs.