"I am using X GPUs with miner Y and I get error Z. What's wrong?"
This kind of question is very frequent. I wonder if they are on-topic or not...
I would consider that on-topic, and assume others would as well. It's a straightforward technical question.
I understand your frustration, but we're pretty path-dependent at this point. The value of giving up on Stack Exchange diminishes the closer we get to the site launching. What kind of time limit would you set? I estimated a while back that we'd reach the required numbers around the end of August, and that still seems accurate.
Promotion seems to have a big effect on the number of people we get. Since the post on /r/Bitcoin yesterday, we've gotten 6 more high-rep users. That was the second time a Bitcoin Stack Exchange post had been made there. Do you have any ideas for other places to promote it?