IMPLICATIONS FOR POLICY 1'29 ful, yet without enough money to buy all the books they- want. In addition, the library clientele is remarkable for its wide interest in all media of communication. As a group, the library users read more magazines than do their fellows, and they tend to read and see and hear more “serious” communication content. Thus, they constitute a “communication elite.” Among adults, the public library is serving people who also make relatively more use of other communication facilities within the community. It is not only the library which at- tracts them, but all sources of communication. This interest in the sources of ideas and information sug- gests another characteristic of library users. There is a tend- ency for them to be “opinion leaders” in their community, that 1s, persons who influence other people. As a group, they are more curious about the world than their fellows; they know more; they have more ideas and opinions; their word is respected more. They are people who help to form the opin- ions of their peersyThus, the public library exercises an im- portant secondary or indirect effect upon the community, through the influence of these leaders upon the rest of the population. Finally, the actual use of the “typical” public library is highly concentrated among relatively few of its clientele. Most adults use the library not at all, some use it infrequently, and a few use it a great deal. This means that a small group of people—the frequenters of the public library—account for a large proportion of the library’s activity. Most of the service goes to only a minority of the adult population and only a few of the users; and this group of active users, again, probably differs in composition from the population as a whole and - even from the total group of users. They make the most use of the public library, but whether they make the “best” use of it 1s not clear.