I am looking for high traffic sites/blogs that offering banner ads to buy but I don't know should I pay for impressions or pay per month? Please share your experience.
Can't get much bigger than Facebook, why not advertise there? Before I suggest what to spend, I would need to analyze your goals, offer and audience.
You are talking about impressions? So it's not a big deal to get 1000 impressions because there were more than 100 types of tools/extinctions that can give you Impressions/Pageview you have to focus on Unique visitor/Traffic Source/Quality Clicks Thanks
You can go for website or blog. but go for pay per 1000 impression with blogs. Don't go for websites. Second solution: I wish you to go for facebook, twitter, linkedin- the highest traffic and source website. Where you spend an amount and gain lot of traffic easily directly to your website. Have a great time.
I would say $1 per CPM is pretty good. I'd suggest staying away from Facebook. We have spent thousands using it and it does not work. They send nothing but fake traffic.
I heard this too about facebook sometime back. People complaining about fake hits etc... Haven't had any experience myself though... Pay per impression is good. You'll get an idea of click rate for a small amount. Then you can carry on with a monthly subscription if you find it useful.
I recommend to pay for a month if you can afford and the target advertising users have interest in your content. If the place is good you might get a lot of traffic. Also offer a free give away of banner by collecting their email address. Make sure you verify the email as well.