As the number of sites on the Web increased in the mid-to-late 1990s, search engines started appearing to help people find information quickly. Search engines developed business models to finance their services, such as pay per click programs offered by Open Text[7] in 1996 and then[8] in 1998. later changed its name[9] to Overture in 2001, was purchased by Yahoo! in 2003, and now offers paid search opportunities for advertisers through Yahoo! Search Marketing. Google also began to offer advertisements on search results pages in 2000 through the Google AdWords program. By 2007, pay-per-click programs proved to be primary moneymakers[10] for search engines. In a market dominated by Google, in 2009 Yahoo! and Microsoft announced the intention to forge an alliance. The Yahoo! & Microsoft Search Alliance eventually received approval from regulators in the US and Europe in February 2010.[11]

Next, place the fill light at a 45-degree angle on the other side and lift it close to or just above eye level. The purpose of the fill is to soften the shadows created by the key, but without getting rid of them completely. Therefore, the fill should be dimmer than the key light. If you have to use the same type of light for both, scoot the fill back and diffuse it by clipping a clear shower curtain onto the clamp light with clothes pins.