Let's add a dose of perspective here. Do a job search on craigslist or simplyhired for "php," "rails" and "django" and you'll see that there are vastly more PHP jobs than either (10,726 on simply hired right now) and many more Rails jobs than Django jobs (2,553 vs 328). Django is popular with some circles, such as people reading HN on Saturday nights (which is when that poll was posted), but this does not reflect actual usage.