Table 1.

Response statistics based on different motivational messages [69].

Motivational Message	Number of invitations sent	Recipients who followed email link		Recipients who actively contributed
		No.	Percent of total	No.	Percent of total
Helping scientists	9,131	429	4.70%	223	2.44%
Contributing to science	9,129	508	5.56%	215	2.35%
Learning (about science)	9,123	529	5.37%	194	2.12%
Joining a community	9,130	490	5.80%	176	1.93%
Totals:	36,513	1956	5.35%	808	2.21%