Online Business idea?

[Renny]

As a blogger/website owner it’s tough to find advertising for my site. I want to create a website that matches websites with space available and companies that would like to advertise. Very often, I see advertisements on websites that don’t make sense (ex. women's clothing on a sports website). We would match both parties based on profiles that they fill out that specifies their desired target markets, campaign budget, desired reach, etc. and match them like a dating site would. This saves time, money, and effort for both sides while increasing effectiveness of marketing for everyone. We could also provide marketing advice for an extra fee and this could eventually turn into a social media platform for businesses.

Does anyone think that this is a good idea? Does something like it already exist? Any relevant ideas?