various panels to join

Here are some sites to join where you can get samples, coupons for free or very reduced products and sometimes compensation even.







Loreal Consumer testing
(They send you products to test, haven't qualified for many, but pretty neat.)

Bzz Agent
They send you various items to try out and they want you to share information and usually coupons with friends, you also earn points for mypoints from doing surveys and bzzing.

House party
Send you cool stuff to try with a group of friends at a special party.

P&G Sampler

VocalPoint (P&G)

All you reality checkers
Freebies, very rare to get messages from them though.

Mccormick Consumer Testing
Send you new products to test and a giftcard to buy ingredients, haven't been messaged in awhile though, may be inactive.

20/20 Research Panel
 Big bucks for doing panels, usually a few day long, can be online, video, or phone chats, usually $100-300 can only qualify once every 6 months.

Focus Foward Panels
Panels and surveys.

expotv/tryology
Earn points you can cash in for doing video reviews and surveys, they also have a program they send you things to try out.


Klout

Used to be awesome, kinda meh now.

Mom Ambassador

Opinion Outpost 
You can earn some decent money doing surveys from here.

Ipsos/Isay
 Decent survey site and they also send you products to test on occasion.

Survey Savvy
Pays really well for surveys, also has product testing opportunities, and occasionally options to join panels, which can pay pretty well.

Pinecone research is awesome too, but they only occasionally open enrollment.