RealNames will cease operations on June 30, two days after its two-year contract with Microsoft expires. In March 2000, Microsoft made RealNames its exclusive provider of keywords for Internet Explorer in exchange for a 20 percent stake in the company and $40 million. RealNames paid Microsoft $15 million last year, but was unable to pay the $25 million due this month. Instead, RealNames executives went to Microsoft with a deal to continue the relationship, but they were rebuffed.