Getting into the C-suite usually requires an invitation. Or maybe buying an expensive ad in a business magazine.

Now you can target decision makers by company size, job function, industry, and more by using LinkedIn DirectAds. If you don’t know, LinkedIn is the premier professional social network, with over 25 million users, who use the network daily to build business contacts and industry presence. LinkedIn has opened its doors to advertisers, provided they are a member of the LinkedIn community. While anyone can join (and it’s free), potential advertisers must have a legitimate profile and a minimum number of connections (the equivalent of friends). LinkedIn does this to protect the integrity of the network and keep spammers at bay.

At this time, LinkedIn only offers text display advertising, but the price is right and the location is unbeatable. Typically, ads go for $25 for a 30-day run, with minimal upcharges for increased impressions or audience targeting. Ads are placed on a CPM basis (no cost per click at this time). So if you want to specifically reach senior marketing executives or salespeople in a specific geography, you can for a few extra bucks. Ads appear above the fold on the member’s profile page or the LinkedIn homepage, displaying your text content, url, and a link to the advertiser’s LinkedIn profile.