Open Brainstorms

Sections of Wikipedia entries could link to chapters of published books -- the whole chapter would be displayed online. For example, the Wikipedia entry on The Beatles has a section about their recreational drug use. This entry could link to the chapter of a published Beatles book that discusses their drug use. This would publicise the book, and also Wikipedia users would know that the information is reliable, as it's from a published, edited book.

Offer rewards for anyone who spots mistakes. Have charts ranking the most successful "mistake spotters".

Give experts the power to 'lock' entries permanently.

publish original literature that has not been published elsewhere - something really big, even if it is rare, will get news headlines. ie. in the Cancer article, say somebody discovers it can be caused by ice cream, you put it in there before Science and Nature, and they have to cite Wikipedia!

have famous Ph.D.'s in that subject give their official stamp

As an extension, allow ppl to form communities so they join a certain opinion group to debate against the other side. This will gt more involved and create better defined boundaries between facts and opinion.

ensure all entries are fact based and not opinion based

start an ad campaign where people say how credible and useful the content is

Create a "Credibility Indicator" that shows up on the top of every page and have a select panel of experts give an approval rating to it.

Content partnership with an encyclopedia publisher. A topic page would include the traditional encyclopedia entry and the user content that Wikipedia is known for.

Engage an editorial review board

Engage Phds in the related fields to write articles

cite data

cite sources in text