I just recently found out about this website called BzzAgent. All you have to do is take surveys that they give you and eventually they ask you to join a campaign. Some of the campaigns give you chance to try out their products! The reason why you have to take surveys are because they want to help match you up with a campaign that you would suit your interests. I think it's pretty neat. The only thing is, is that you have to be really patient because sometimes it takes weeks for you to even receive another survey. I just recently got involved with a campaign called Smarterer. It is just a campaign where you answer questions about the website, I think that it is pretty interesting because I've actually learned a lot about BzzAgent by answering questions about the site.
I hope you enjoyed this random post!