The answers!
the template is at: http://en.wikipedia.org/wiki/Template:Disambig_editintro we discussed it primarily at: http://en.wikipedia.org/wiki/Wikipedia_talk:WikiProject_Disambiguation/Archi... we are still improving the summarised-MOS-wording at the template's talkpage. (The actual MOS guideline contains any provisos/exceptions/stipulations/qualifications/contextualisations/examples (or it will once they finish arguing about it at Wikipedia_talk:Manual_of_Style_(disambiguation_pages)#More_than_one_author))
1 link per line is recommended because we're trying to find the article that the reader meant. Disambig pages are never an intended target (except via the hatnotes), but instead are signposts, pointing to actual articles, and usually with a wiktionary template.
Nobody expects the Spanish (disambiguation)! So we only highlight (link) the words that they might have meant. http://en.wikipedia.org/wiki/Spanish
article counts: http://en.wikipedia.org/wiki/Template:Actual_number_of_articles was recently created and discussed at http://en.wikipedia.org/wiki/Talk:Main_Page/Archive_127#Contradictory_number...
hope that helps -- User:Quiddity