Bidvertiser don't require their publisher to have a minimum impressions per month unlike other PPC company. So it is easier to join. Its Alexa global rank is 1,121 and the site was created on May 13, 2003 so it has been around for some time now I don't think this is a scam.
To ensure quality website and blog they have a manual process to check your website and blog if they comply with their requirements.
You will earn through BidVertiser every visitor that visit your site or blog and clicks on an advertisement placed on your site or blog and an extra revenue if the click turns into a conversion. Conversion can be filling up of a form, signing up to a website, or buying a product.
Payment options are Paypal, Western Union, Check, or Wire Transfer the minimum withdrawal is $10 for Paypal while Western Union is $100 as well as Check. Wire Transfer is also $10.