query abt participant recruitmemt

P

Hi, brief query. anyone who has used a proper recruitment instrument for participants in social science research? Will be needing them for research on Web 2.0, like youtube etc, and wil need them for a year of lets say 3 interviews each, some pariticpant obsevation, online interaction and other issues. I really need by recruitment to be good.

How do u go abt this and also how much does it cost?

10777