It reads "Buy & Sell SEO" from harrisdirect.com.
At first one would think that harrisdirect.com is buying the keyword "Google IPO" which would have made for a nice catchy news flash "Harris Direct tries to ride the coattails of the Google IPO frenzy by engineering IPOs of SEOs... In an advertising campaign launched today, Harris Direct announces that they are buying and selling SEOs..." (thanks Doug for the quote).
In reality this ad is just an inevitable result with an undesirable outcome.
AdWords must of matched the keywords "stock" and "ipo" with "seo". Harris Direct must of purchased the keywords stock and ipo and ran an add in the format of "Buy & Sell [keyword]". In this case the major keyword was SEO, hence "Buy & Sell SEO". SEO's stock price is at an affordable price. Should we listen and buy some SEO stock?