Ad serving network 24/7 Real Media, Inc. Tuesday announced that Herald Interactive, Inc., the Web sites for the Boston Herald
, four suburban dailies, and 89 weekly community newspapers, has
agreed to use 24/7 Real Media's Open AdStream(R) Central as its exclusive ad serving solution. The largest of the Web sites in the group, BostonHerald.com, says it has 1.5 million unique visitors each
month and 7 million monthly page views.