Posted 30 July 2009 - 08:21 AM
Wait, do you mean how long that the site will stay high in the listings?
If so, it really depends on how competitive the kws are that you're targeting. It likely won't stay doing very well for anything remotely competitive for more than a few days or weeks. I don't work with many new sites, however, so I'm probably not the best to answer this.
I do have my own new site I'm working on and looking into these things as well though!