I recently applied and was accepted to be a pet health expert on JustAnswers.com.
If you have any questions related to dog or cat health, you can visit the site and ask your question. In fact, you can essentially get expert advice in just about any field (medicine, law, mechanics, etc, etc). You can even request the "expert" you want to respond to your question. There is a fee involved and the "experts" are paid a percentage of that fee.
Click the link above to be directed to the site. My site name is "Dr. Cliff." Hope to hear from you!
NB: Remember that online advice is for information purposes only. It does not replace a thorough physical examination by your veterinarian. The acquisition of vital information may be omitted through online communication.