I did a divorce investigation a few years ago that I like to call the Instagram Investigation. The husband was accused of marital waste (dissipation), as he was spending lots of money on his new girlfriend while his divorce was pending. The wife needed to quantify how much he was spending on the girlfriend, but it wasn’t clear who was spending money just by looking at the credit card statements. Until you looked at the girlfriend’s Instagram account and saw all the pictures from her shopping trips. It was a matter of comparing 150+ dated photos (also tagged with locations) to credit card charges to determine what was spent on the girlfriend.
Can we use Facebook to assist with financial investigations? Sometimes. I find that Facebook is most useful when researching relationships between people and tracking the activities of a party. It hasn’t proven to be particularly useful in terms of financial analysis, except when an occasional vacation or automobile purchase is documented on Facebook.
Even if the information I find may be limited, I still often check Facebook to see if there is anything I can use. I have found that Instagram accounts are very often public, so they don’t require permission from the user to see what he or she is posting. On the other hand, most people seem to have privacy safeguards in place on their Facebook accounts. That means you’re not going to see much of their activity unless you are FB friends with them.