The spin Extrange wants to put on it is very transparent:

One point about this manga that everyone notice: It’s ecchii, with some sex scenes (but nothing very explicit or hardcore).

and

My Lovely Ghost Kana is in it’s essence a manga about love and hope.

The “some sex scenes” above must be a new euphemism for “complete chapters such as ch.3″.

The charitable explanation is Extrange being in denial. I’m no expert in ecchi, but Japanese mangaka commonly blow a bit of romantic and/or philosophical smoke, to make things more interesting. For example, let’s look at a well-known Azumanga doujin, the name of which I’ve forgotten, and so I usually call it “Osaka in Love”. It has a few panels with Osaka acting upon her love confusion, and it’s charming.

Nonetheless no sane person would ever claim that’s anything other than a porn doujin. But Kana is exactly the same! In fact, I’m pretty certain there’s more frames of characters having sex in it than in most doujishi I’ve seen (I like my fluff). Sure, Mrs. Tanaka draws carefully around the throbbing members, which is why Kana is soft porn, but still a porn. And YKK is not porn. Let’s be honest about it.

What does this mean? I think the writing is on the wall for animebloggers: sex it up or die.

BTW, I mentioned before how I introduced buddies from my jeep club (actually, “get out into a desert and drink while watching porn” club) to anime, by showing them Dragon Half. The shock was pretty good. But better yet, it caused at least one of them to turn to hentai big way. He said, plain anime never kept his interest, but tentacles… those were intriguing.

QUICK UPDATE: Mike noticed that, outside of the screencap above, Google reports that Philippinians [*] are first in the world in hentai. Are they perverts? Well, a trend for “anime, hentai, porn” shows that Philippines is the only country in the world which looks for more anime than porn (no, seriously: the data tells that).

[*] UPDATE: Mike informed me on IRC that the country of Philippines is populated by Filipino. Is he pulling my leg or what? Sounds just crazy enough to be true…