I like that it is easy enough so anyone can create their very first map without any prior experience required! It's also free which makes me happy because my business needs are not high at all (yet). The only thing i dislike about cobrowsedotcom/javascript mapping API was how slow they were when loading data from our database into maps but now we have upgraded them using Google Maps JavaScript APIs v3 instead - everything works great there too :) If someone wants an amazing way to present his customers' locations then he should definitely try out cobrowe dot com api. They're really helpful guys who help us solve problems even before asking anything :D And yes if u wanna know why do people still prefer googlemaps over other services than go ahead ask yourself what would make users switch away?