The article mentions 1,000 visitors is fairly easy and getting them to stick is the hard part. But what is a good number of users that stick around? And how about what is a good benchmark for visitors as well?
That's a really good observation. I am also launching a free service geared towards a specific niche audience and we are trying our to acquire more and more users. I think that in addition to getting some press on tech blog like TechCrunch, we should probably target industry specific bloggers more since that is where our true customer may be.