These are the Social word of mouth sites I am part of, and enjoy reviewing free products either by coupons, rebates, or actual samples, and sometimes even full size through the mail for my opinion.
There are many different sites, and each site has its own rules, and what is expected of you to do for accepting a mission/campaign/whatever it may be called.
I upload videos of myself showing & talking about products on some sites like,
Expotv.com
BzzAgent.com
Smiley360.com
Crowdtap.com
These are just a few of my top favorites to participate in.
Sometimes just a picture is needed, and for you to write a review/report. Other times actual videos, and surveys too. I enjoy doing things like this. It's great to be taken outside of our comfort zones, and pushed into trying things we normally may never have tried.