“…Estimations of a response rate seem to be lower when the researchers draw a sample from a larger general population, such as, for example, members of online communities (Govers et al, 2007a(Govers et al, , 2007bY.-H. Lin, Wu, & Chang, 2006) or subscribers to LISTSERV (RezendeParker, Morrison, & Ismail, 2003): response rate in these studies is under 4%. Response rate tends to be higher when invitations are sent to individuals to form focus groups (Byrne & Skinner, 2007) or when responses are solicited from experts (Obenour et al, 2006;Obenour et al, 2005;Tasci & Kozak, 2006); response rate in these studies is over 20%.…”