Asking questions you encounter in your day to day work and sharing those questions with Twitter and Facebook and blogging is really the best way to bring new users to this site.
But… the end game is to attract more user, not simply to ask more questions. The only way that happens is when you ask particularly intriguing questions about problems you actually have… questions that other people will look at and slap their head "Yes! I've always wanted to know that myself!"
This site appears to be running out of interesting things to talk about. You can tell by the lack of specific, personal questions being asked and the more generalized, boring "would blah blah make me more productive?" questions this site seems to be falling to. You are veering steadily towards random imponderables and broad discussions about the office windows and temperature and better computer equipment… an nobody on this site seems to have even noticed.
This is not going to be a terribly interesting site if you have nothing further to talk about.
The users you attract will imitate what they see on this site. This is the only chance you have to build up a body of questions and answers which will encourage more of the same. It is much more important to keep the quality high and not fall into the trap of letting a bunch of lame, half-assed questions slip under the radar because you've become tired working towards quality. Accumulate all the questions you want, but if those questions are not interesting to others, that's when this site will fail.
It is the quality of questions that will ultimately decide the fate of this site — not the quantity.
Does this site have a chance of succeeding?
Asking the first questions