Why is wiki answers rubbish?

Answer 1

That is a matter of opinion. But they sometimes can't answer a simple question.

It is not really rubbish. We simply don't have enough quality users to answer the bulk of questions, and we have many quality users. It is really a huge job. For instance, there are about 7.7 million questions that don't have a category. To sort all those, 1000 users, doing 100 a day each, would need at least 77 days. Plus with all the new ones a day, make it at least 100 days. With only 100 doing that, it would take about 3 years.

The best way to fix the problem would be to volunteer and get others to help. Of course, recruit rational people, not trolls, vandals, extremists, nor radicals.