All firms having their own web sites require some form of ranking-boosting service, since search engines are the main tool that brings online traffic and business to them. However, several researches and surveys in the past have revealed the fact that many business groups find it difficult to source the best Search Engine Optimisation (SEO) agency for their relevant requirements. A post by online resource SEO Marketing World has suggested that one of the most reliable methods of assessing the effectiveness of a search company is to conduct research on it and check how good or bad it is at boosting its own online ranking.

The resource also cautioned marketers not to select a company with a bad reputation or one that uses so-called black-hat techniques. This is because top search engines often penalise a web site that uses tactics they view as unfair. Another piece of advice is that ideally, SEO strategies and search engine marketing should be customised.