What percentage of traffic only wants a solution to their current issue.
How many accounts do people abandon after they get that solution? and
have forgotten that password and setup another account when they have another problem..
I could keep going but My point is I do think the site would be better served focusing in on mobile and the areas Lexluethar mentioned software realm, network and enterprise business
I would also like to think if the idea is to find a way to generate return traffic somebody might discuss some type of community involvement or projects that might generate that type of interaction.