Actions that could best increase the number of active portal members (multiple choice) 1 - All HENVINET partners have to contribute with content to the portal. 2 - A paid scientist (task force) should work on building the content of the portal website. 3 - HENVINET should promote the portal with leaflets, email announcements and conference presentations. 4 - The quality of the content of the portal is more important than the amount of information. 5 - The portal should have a lot of additional features such as links to other websites, conference announcements, research calls. 6 - Other actions are better to apply.