Bob Truel is a computer programmer. He met Rich Skrenta in ninth grade in Mt. Lebanon, Pennsylvania<ref name="virus">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> and has since co-founded several Internet ventures with him and others, including DMOZ with Bryn Dole, Chris Tolles, and Jeremy Wenokur in 1998,<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> Newhoo in 1998,<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> Topix.net with Tom and Michael Markson in 2002,<ref name="virus" /> and search engine blekko with Michael Markson and Bryn Dole in 2007.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>