Frequency of Update
Sites which are updated very often are more in need of searching -- visitors can't be sure what is available. Sites updated hourly and daily are more likely to have search engines than those updated monthly or less often. However, the more frequently the site changes, the more difficult it is to keep the search index up-to-date: perhaps that's why many sites updated daily and even hourly do not have search engines installed. The proportions have not changed much since our previous surveys.
frequency without search with search Hourly 45 46 Daily 232 177 Weekly 226 95 Monthly 123 39 Rarely 50 11
