On Clickz.com I saw this nice discussion on the subject of using Flickr for commercial reasons.

In general social media is used more and more for commercial reasons and not everybody is staying relevant.  But the difference between wrong and right is not always clear.

Even if Yahoo is monetizing Flickr with more relevant advertising options. Free publicity will always exist.

Like in old media free and paid publicity have their own place and advantages. Big difference though is that in old media there are editors who are in charge of the quality of content. In new media it’s us, the audience.