(All text, information, and images courtesy of Court House News.) LAS VEGAS (CN) - A small business claims Amica Mutual Insurance bullies competitors with frivolous lawsuits to try to monopolize the Internet keyword advertising market. In its federal complaint, Darba Enterprises claims to be the "latest victim" of Amica's campaign to send "misrepresentative cease and desist letters" to small businesses. Darba claims Amica targets small businesses with threatening