Social Media - Compare the features of the top personal online social networks

Social Media

compare the features of the top personal online social networks, and create a table listing the number of active members in the united states and worldwide, the number of years the sites have existed, the more popular features, and the amount of content, such as photos, news stories, and links, that is shared each month. 

what types of advertisement are featured at each of this site? which sites are marketed toward younger and older users? 

then, research the online social networks used for business. how does their content differ from that found on the personal online social networks? 

how many companies use these sites as a recruiting tool? 

how many native languages are supported? 

how are professionals using these websites to find potential clients and business partners?