[w1ntermute]

You can set up this sort of thing at the browser level to work directly with the site of interest (Wikipedia in your case):

http://support.mozilla.org/en-US/kb/Smart%20keywords

You can set up the same sort of thing in Chrome by going to Settings -> Manage search engines, then editing the middle column to have just one or two letters of your choice.

Keyword bookmarking is also very useful: http://lifehacker.com/196779/hack-attack-firefox-and-the-art...

In fact, at this point, the number of times I have to manually type in a URL (when using my own computer) is probably fewer than 10 per day. I've never understood why people make such a big deal about !bang when instead you can search the sites directly with a keyword search, plus you're not limited to those DDG supports.