I've been dealing with this since my first visit to Area 51, but I thought it was by design. Now it seems it's not just me; Joel Spolsky described my issue eloquently. Relevant snippet (emphasis mine):
A site for dogs? Golden Retrievers are on-topic. Wolves: Off topic. Barely, but off topic.
Dalmations? Obviously on topic. And this question adds nothing. We've established that Goldens are on topic. Do we really need to enumerate the breeds to understand what it means to be a site about dogs? No.
This is not a purely theoretical problem. I've been following the Web Applications proposal myself, and was thinking of posting an example question about sorting Google spreadsheets using multiple columns. But when I looked through the existing questions, I found a half dozen "Can I get functionality X from application Y"-type questions, so I didn't ask mine. As the hours and days passed, it got progressively harder to wade through these quasi-dupes to get to new questions.
So, I would like to propose that generic example questions be the official Area 51 standard wherever reasonable. Some people are already doing this. In true area 51 style, here are good/bad examples: don't ask "What is the average length of dalmatian hair?" or "Can you use Duff's device in Java?"; instead, ask "What is the average length of [dog breed]'s hair?" or "Can you use [syntax] in [language]?"
This will increase clarity without sacrificing value. It will also stop people from posting three similar questions which, if asked generically, would be only one question (which I have seen happen a few times). With fewer total questions, posts of dupes due to "There are 1000 example questions already? tl;dr" will decrease. And in the future, new users who see the golden retriever question might still post the dalmatian question. But new users who see the [breed] question won't post another [breed] question.
"Can you use Duff's device in Java?
and"Can you use [syntax] in [language]?"
are not really analogous questions.