Just be very careful when signing up for more than one site. Make sure you do not duplicate any offers (especially keep track of freebie offers), you can only get paid once, regardless of what email or person in your house you use...they track by multiple things, ip address, home address, phone, email, user id, blood type, dna

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Point is, some people (not saying you...saying there are some that do this on purpose) try to circumvent the rules by creating ghost identies, and it usually blows up and hurts us all in the long run by the advertisers pulling offers and revoking credits, even if you were the honest users.
Also, only take 2 daily surveys from greefield per day (on SR these would be the Greenfield Daily Survey and the Your2Cents Surveys). Doesn't matter what site, as long as you consistently use same demo/email.
Example: If you use your info & email address to take a ds on sr, if you sign up on some other site, make sure to use that same info & email if you want to do the ds there instead.
Alternative is you take one with your info, and another family member takes one with theirs, but again has to be consistent.
Example, you can use your info/email on sr for one survey, family can use his//her info & email on another site (or on the 2nd survey on sr). So long as it isn't more than 2 per household per day and always same users/email.
Clear as mud?