Use of the address bar in Firefox is too slow. The address bar is apparently also known by the name "Smart Location Bar", alias "Awesome Bar". There is a very notisable delay when typing in the address bar and opening the typed stuff. For example, "wt slow" to lookup the word slow in Wiktionary (requires setup for "wt" to work).
Fortunately it can be turned off:
Open about:config (type or paste in the address bar(!))
Find browser.urlbar.maxRichResults. E.g. type maxRichResults. Change the value from 12 to 0.
Wikipedia can be, and is, used as a Q&A (question and answer) site. Normally, we would think of Wikipedia as the online encyclopedia that anyone can contribute to, but beneath the surface it is also used for other things. There is even a podcast, Wikivoices (although it appears to have died out in late 2009).
For instance, the main entry point for getting help on doing something, the Helpdesk, works as Q&A. This is set in a wiki context:
A new question is a new section and is added to the end of the page.
Any section can be edited on that page, as on most Wikipedia pages, but it is not considered good style to do so.
An answer is posted by editing the new section, preceding ones response with one or more commas to indicate the threading level (who is reponding to whom).
Old questions roll off the page after a few days by automatically being moved to an archive page (an unfortunate consequence is that the original URL to the question gets broken).
As an example, there is the equivalent of a language Q&A site, http://en.wikipedia.org/wiki/Wikipedia:Reference_desk/Language. It works the same way as the help desk.
Wikipedia is a very large place. Just navigating the various help pages is a challenge. Using Wikipedia in the Q&A fashion described here makes it much more manageable; it is possible to ask real people and get answers.