Microsoft has been named the top display advertiser on the web in the month of June. Redmond produced roughly 5.5 billion display ads, which were seen by 126.3 million people, beating out such notables as Netflix and the University of Phoenix. Many analysts are under the impression that Microsoft’s 1.7% market share — up .7% from May — is due to their aggressive advertising of Windows Live Search and the introduction of its Windows Live Search Cashback program.Microsoft might be on top when it comes to purchasing ads, but it finishes in fourth when it comes to actually displaying them. That award goes to Fox Media, the parent company of MySpace. Fox Media ran 52.3 billion ads in June, giving them a surprising 15.9% share of the market.

Yahoo comes in second with 34.6 billion ads and a 10.5% share. Other companies listed include AOL, Google, and Facebook. While Yahoo is far behind Fox Media in terms of the amount of ads, it outdoes Fox Media in the overall amount of viewers. Yahoo ads were seen by 150 million unique users in June, while Fox’s ads were only seen by 83.7 million unique viewers.Google is finally bringing its Google Ad Manager tool to the masses. Ad Manager, which disseminates, tracks, and manages both first and third party advertising, has been in closed beta status since March. Google is seen by some as the chief competitor to OpenX, an open source software system that performs largely the same tasks. It is also believed that Google has the early advantage over OpenX, largely due to Ad Manager’s ease of set up and ties to the already powerful AdWords.

Chris Brogan has written an interesting piece on using Twitter to help expand your business leads. In “How to Listen for Opportunities on Twitter,” Brogan states that the most powerful tool you have is the Twitter search engine. By using that engine, along with the option to make specific users RSS feeds, you can easily track those who might be interested in your product or service. Extremely easy to execute, this article is a great source for anyone who wishes to get a bit more out of Twitter.

If you’re a business owner, and you’re looking into advertising on mobile phones, take a look at JumpTap. JumpTap is a search engine directly designed for use on mobile phones. To top it all off, JumpTap claims to have an advertising front end that could potentially give Google AdWords a run for its money.