I decided to set the titles of my photos in Lightroom (via the IPTC metadata) instead of my web-based gallery software. However, I'm somewhat unsure about the proper usage of the various title-ish fields: Headline, Caption, Title
For example, I have a photo showing a head banger on a concert and when publishing the photo I'm going to show "no concert without headbanging" below the photo.
Obviously I could put this in each of those fields and simply let my gallery software use whatever field is present (and use only one of them). However, that would be somewhat dirty and most likely not the way those fields are meant to be used.