WebQuests are Feminine. Who Knew?

I keep track of mentions of the word WebQuest using Technorati, which tracks the travails of pre-service teachers creating WebQuests in a required class, and occasionally the wails of high school kids who were assigned a WebQuest. I learn a lot from reading these unedited accounts. Increasingly there are blogs in Spanish, Portuguese and Chinese that mention WebQuests, too, and today I noticed something I hadn't thought of before: WebQuests are girly.

Here's the evidence: "Las WebQuest", "Una WebQuest", "La WebQuest", "Esta WebQuest" and there are lots more where those came from.

I wonder if that's true in German or any of the other languages that assign gender to nouns? And how do they know?