The largest portion of searches contain two words finds Amsterdam-based research firm OneStat.
Internet users who type two words for on a search engine query account for 31.9 percent of searches worldwide. Three-word phrases are used for 27 percent of searches. A single word accounts for 15.2 percent of queries, and four words are used for 14.8 percent of searches.
"Search engines like Google, MSN, and Yahoo can drive a lot of traffic to a Web site," said Niels Brinkman, co-founder of OneStat. "It is important that a Webmaster or SEO expert knows what kind of search phrases they have to use."
Instances with five (6.5 percent); six (2.7 percent); seven (1.1 percent); eight (0.5 percent); nine (0.2 percent); and 10 (0.1 percent) words are used in fewer searches.
OneStat.com collects data through its Web analytics services. Numbers are averages. Research is based on a daily sample of two million Web visitors from 100 countries.