1948
The goal of the index is to help advertisers increase their visibility online by spending more effectively when buying banners and other types of interactive advertisements to generate traffic .
 advertisers, their
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 advertisers, their