I don’t really bother with CAF much anymore. If I want to look at my art, I pull my portfolio out and look at it! Why would I do it on a small LCD monitor instead? And, I don’t have the kind of collection that gets offers.
Facebook is better for sharing only because you are more likely to get feedback from people who don’t even know your CAF gallery exists. Posting new art on CAF is like pouring a bucket of water into the Niagara Falls.
As for cataloguing my art, yes, I have scans of all my art in a photos folder on my phone. I also have a folder of my scanned art on my laptop for record keeping and insurance purposes. The process for posting art on CAF is too cumbersome. And you have to pay for the privilege of doing it.
Someone is going to come along with an App at some point that makes the process a lot easier.