Safety was, however, the exception, with 53% of women and only 38% of men expressing concern.
There is, however, great variation along gender lines.
Nevertheless, only one in three had actually gone out on a date with someone they met online.
About one in five, especially women, at 30%, compared to 16% for men, asked for help with their online profile.
Attitudes towards online dating improved visibly between 20, the Pew Research Center found.
Most services offer digital messaging, while others provide additional services such as webcasts, online chat, telephone chat (VOIP), and message boards.
Members can constrain their interactions to the online space, or they can arrange a date to meet in person.
Opinions and usage of online dating services also differ widely.
A 2005 study of data collected by the Pew Internet & American Life Project found that individuals are more likely to use an online dating service if they use the Internet for a greater number of tasks, and less likely to use such a service if they are trusting of others.