I frequently see two complaints about the Darker than Black sequel, Gemini of the Meteor: (1) That it had too much "moe shit," and (2) it didn't have enough Yin. Typically, one encounters these complaints separately, as they would be contradictory if expressed together; Yin is a stereotypical moe character. And how.
Viewed in simplest terms, Yin is a quiet, passive albino of the Ayanami Rei and Nagato Yuki variety. In bridging the first and second season, the Darker than Black: The Black Contractor OVAs take the all-Yin-all-the-time route and play up her moe characteristics quite heavily, even if the plot is ostensibly about building up to Yin-killing-people moments. [P.S. Spoilers.]
I generally adopt a neutral attitude towards moe. While I agree there is too much moe-centric anime nowadays, proportionally speaking, I am not opposed to it on principle and I have no objection to its presence in Darker than Black, even when it is layered as heavily as during the first "Darker than Yin" OVA. And oh, it's heavy all right. I suspect one's reaction to the first OVA likely defines the shape of one's attitudes towards moe in general, one way or another.