Earlier quoted context omitted.
I've found that "!w", which searches Wikipedia, is extremely useful.
One thing that consistently blows my mind is how readily an external search engine creates a better index, with more relevant recall, by scraping the published static pages of Wikipedia, such that it outperforms Wikipedia's own search, Wikipedia should be able to search itself better than any external entity, but cannot. Wikipedia, in effect, is blind to its own data, and can deliver less insight into it's own conten…
I disagree, I think Wikipedia is akin to a collective blog where people just dump information to. Indexing is hard enough that it becomes a full-time job to do it well, and that takes time and money.
Search is so hard that external search is necessary for many websites to exist outside of a void. If we expect blogs to have their own searching functionality, we end up with a collection of disjoint webs, and that would basically kill the web as we know it.