So you've got 2500 unique visitors this month doing 50k page views. general, social network traffic might generate $1-2 cpm so that's $100/month in revenue.
if you have a high value niche with targeted, quantifiable traffic you can get that maybe as high as $50/cpm on a well marketed site (read: you have ad sales people or you're cramming the site with ad channels.)
This guy
http://www.johnchow.com/make-money-on-the-internet-april-2007/
has grown his blog to 250,000 page views, crammed it with every kind of contextual ad you can think of, is a compelling writer with great content. He's at $50/cpm. Of that, 40% comes from a pay-per-post ReviewMe ad thing, so his ads are generating about $30cpm.
So you can put adsense on the page, but you won't make any money. and you're a ways off from doing banner ads.
Basic summary: if you can start a blog/site geared towards users who probably have the Alexa toolbar / Firefox SearchStatus Plugin installed, you can reap much higher CPMs.
Last month when my startup signed up our first groups we did about 25,000 page views, and this month we're on track to do about 50,000. My current average pages viewed per visitor ranges between 20 and 30, but what I don't know is how many page views does a website need to produce a month before it can get advertisers?
My short-handed response would be that you need about 200,000 or more uniques per month before it becomes meaningful to advertisers. There are sites with less traffic that get targeted ads, but if you're talking about doing something other than AdSense, you really need to be at 200k+ to get meaningful traction in my opinion. Meaingful in my mind is getting more than $5,000 p/month in revenue, btw.
1) How targeted is my audience?
2) How well can I describe my audience?
3) How many ads do I need to sell to justify the costs associated with selling ads (ad server, cost/time of setting up the ad server, salesperson, etc)?
"Getting" advertisers is an active process (i.e. sales) for most publications (online and offline).
try out adsense or yahoo publishing network. G cares if you mix adsense with other contextual text advertising. banners, text link ads, display ads are all fair game.
You are actually welcome to use other contextual advertising networks as long as you clearly distinguish Google Ads from Other Networks Ads. This is easier than it sounds, as the standard AdSense unit has an "ads by google" image
i said contextual 'text' ads.
what i mean is that you can't have adsense and YPN text ads on the same page, and if you have YPN on the same website, it needs to have a different color scheme than the adsense box.
If your newsletter was read by 100 CEOs of Fortune 500 companies, I doubt you would have a hard time finding advertisers.
Social network "junk traffic" is not particularly valuable. You would need millions of page views just to get in the door of major media buyers.
Adsense is a different story - you don't need page views to get started.