With online advertising growing exponentially today, it is a must for advertisers to find ways to increase traffic to their sites, while keeping advertising costs to a minimum. While a lot of companies turn to established systems like Google AdSense or AdWords, some companies have turned to less conventional means. Some have even outsourced their advertising projects.

One method I have noticed with some advertisers is their use of comment posting on other blogs, for link-building. It is with this method that they can boost traffic to their sites and rise up in the ranks of search engine importance. Another method is for advertisers to make use of text-link ad companies. While there are arguments that these don’t work, SEO-wise (mainly because of rel=nofollow, and because Google wants to penalize paid links) these are still useful, particularly when you consider other search engines.

Advertisers favor blogs that are ranked high on traffic-ranking sites like Alexa, and that have good Google PageRank. With this, it would be a plus to their business if there were a tool for them or for the ad companies to find higher-ranking blogs to advertise for them. Blog ranking sites like Technorati and even blogsearch portal may well be the solution.

We discussed Google blogsearch before in brief. You can access this either directly at http://blogsearch.google.com or on the google.com page by clicking on the “more” button for more Google services, or even through alternative entry points, like search.blogger.com and even by using the Blogger navbar to conduct a search.

So how can Blogsearch help with advertising and marketing? Simple. When you search for blogs via keyword, you can sort results by relevance and date. And the results sorted by relevance would tell you which blogs rank high in queries for your keywords. It’s almost the same as doing a Google search (not blog search, but generic search) for popular sites, but the difference is that this is for blogs, and you can almost always leave links on these blogs, either by leaving feedback on the comment threads, buying AdWords ads or TLA ads, if the blogger has these on his/her site.

The basic concept is that you would rather buy links on a site ranking high for your keyword rather than some site that is not as related. And it’s easier to get links from these blogs (especially with comment threads) rather than static websites, which may not be that interactive or dynamic.

Quite a simple idea, I think. This is actually the purpose of Blogsearch–to seek out relevant blogs. But this time, it’s from a new perspective.