A business card is a good start for online presentation.  With the help of a business card site you can qualitatively expand the reach of a consumer audience by placing context, banner, advertising, advertising through discount sites and social networks.  A business card may be suitable for small companies with a narrow specialization (transportation of windows, delivery of containers, bulk goods ...) in general, of one category of services.  You can also connect Google services and leave a tag on maps.
 Of course, there are drawbacks, in particular, in organic search, a business card will not be able to fight large sites, so it will be no higher than 5-6 pages of search (helps contextual advertising).
 In general, a business card is an original way to convey to a wide audience (including via the Internet newsletter and advertising) location information and organization / person contacts.