We've flip-flopped on our naming convention for the images and files we upload into the Design Studio. At first we were organizing them in program-specific folders using program-specific names, but now we're keeping everything in one folder for year 2016 using more "easy-to-find", generic names since we end up reusing same file. I'd like to hear from other people on what has worked and what hasn't worked for them.
We've entertained the idea of incorporating dates into the names, although depending on the where they are used in naming convention it may/ may not be intuitive. I think Marketo will organize Images and Files alphabetically and/or by date.
Here's an example of our naming...
File Naming Convention: Asset Type-Asset Name (Ex: White-Paper-Evaluating-Cloud-Computing-Get-Your-Board-on-Board)
Image Naming Convention: Image Type-Asset Type-Asset Name (Ex: Thumbnail-White-Paper-Evaluating-Cloud-Computing-Get-Your-Board-on-Board)