The ins: it is a rush from the excitement of broadcasting. As well as feeling the need to create some content to add to your profile. Which in some case leads to not only broadcasting but creating additional profiles on some of the popular adult social sites.
The outs: opening up part of your life to the internet and people watching.
For me I am still fairly new to the web cam performer thing, and still struggle with worrying about family and friends finding out. Plus worry about how websites like google screen capture your images and sometimes video feed.
As far as people finding out it gets back to some of my points above. Although Geo Blocking can be your friend to block your home state or country from seeing you. However, this does cut down on the traffic you will receive.
The only thing I would say is be careful because it is easy to get lost in the fantasy and excitement and get lost from real world outside of the camera.
The bottom line it depends on watch your looking to get out of the adult web cam experience.