Some of the people I talk to about blogging are getting 50 hits a day.
Some have broken 2k.
Some of the major adult blogs out there are getting 20k.
These are uniques, not page views
I know of a blogger who icq'd me last night to tell me his 2 week old blog had gotten 50 google hits that day.
Like swedguy said its impossible but ultimately the traffic can be there. But its not a simple formula.