There are a couple great sites online where you can earn some extra cash by being  in a Virtual Jury.  The first is onlineverdict.com.   Here is how onlineverdict.com works(according to their site). 
First, Attorneys submit their case information and questions for the jury.  Then, as an eligible online juror you may be asked to review cases that are filed in your county or federal district. You will receive an email invitation from OnlineVerdict.com to review the case at your convenience, but once enough responses are received, the case will close and no additional participants are needed.  Your email invitation will provide a link to the OnlineVerdict.com website. After you log in you will be directed to the case and asked to agree to the confidentiality policy, review the case materials and answer all questions about that case.

There are no right or wrong answers. We are only looking for your honest reaction to the information that was presented to you. Your time commitment for each case will vary from 20 minutes to 1 hour depending on the details of the case, but you always have the option to choose which cases you want to review. The estimated time commitment for each case will be included in your email invitation.
After you complete a case you will be paid for your time. Payment amounts vary depending on the complexity and length of the case you review, but payments start at $20 per case and can go up to $60 per case. Checks are mailed once a month to the address you have on file in your OnlineVerdict.com account. The number of cases you may be asked to review will also vary depending on the number of attorneys in your area who are using this service.

The second site is ejury.com. Here is how ejury.com works(according to their site).
eJury provides an attorney the opportunity to “pre-try” the case before it goes to trial in front of an actual jury at the courthouse.  Cases at the courthouse are usually tried to juries of 12 people.  At eJury, each case is tried to a minimum of 50 people.  This provides the attorney with a tremendous amount of feedback which he/she will use to establish a settlement value, find strengths and weaknesses in the evidence, learn “public” attitudes, improve jury selection, discover the most effective arguments,….

The typical eJury case works like this:
Step 1:  The attorney prepares the Case Submission which consists of facts from the perspectives of each party, the jury questions which would be used at trial, and personal questions designed to obtain additional feedback.
Step 2:  eJury converts the attorney’s Case Submission into an “html format” and posts it to a secure location on our website where only eJurors in the county of selection can access the case.  The eJurors in that county are then notified by e-mail that a new case has been posted.
Step 3:  The eJurors return to our website, log in, and begin reviewing the facts and answering the questions, each clicking a “Submit Verdict” button upon completion.  Once the minimum number of verdicts have been rendered (usually 50), the case automatically concludes.  A case summary is posted later for those interested in seeing the results.

The pay on these sites varies anywhere from $5-$60. eJury Pay less than OnlineVerdict, but eJury usually has more cases available.  These usually take anywhere from 20-40 minutes to complete, and you will probably be able to make it shorter as you do more of them.  eJury requires that you enter your Drivers License number when you sign up, which makes some people hesitant to sign up, but both of these companies are legit and are safe to sign up for.  They are a great way to make some extra money each month, and are quite different than most online money making opportunities.