The battle for the US search market tends to be viewed in the context of how Yahoo-Bing is faring against Google, but on a global basis, Baidu’s influence cannot be ignored. The search engine – which dominates the Chinese market to the tune of roughly 80% share – accounted for one quarter of all global search ad clicks in Q1, according to a new report from Covario. That compares to 7.2% share for Yahoo-Bing (and a solid 62% for Google).