I just tried that with DDJ out of curiosity (I develop mostly in Flask, but also Django occasionally). It did display a few imdb movie results (though the top one still referred to the framework). However, when I searched for "django python", the intent became quite clear and I got the relevant results. So basically, what you say about personalized search applies only to normal users who don't have much "googlefu" skills, for power users like us who know exactly what to search for, its not much relevant.