The survey also shows that journalists are writing more blogs, and most bloggers consider themselves as journalists.
The online survey, carried out on 2,174 journalists, bloggers and PR professionals in the US and Canada, revealed that about half of journalists use Twitter as part of their research.
Most journalists said they often used the micrblogging site to track the buzz of the day and one in three said they had used a Twitter post as a quote in a story.
A little more than one-third of PR professionals in both countries said they are receiving more inquiries from journalists than they have in the past.
However, journalists admitted only a marginal increase in the frequency of their interaction with PR professionals. About six in ten US journalists say they welcomed pitches via social networks.