Ask HN: Social web features for an elderly/mature audience
I'm talking to a friend about starting a website/community based around crossword puzzles (he's a professional CW designer, I'm the techie).
The market is all but untapped in our niche-locale, and we're pretty certain we can go a long way with a pretty simple web 1.0 site, but to really take off, we'd need to incorporate some features that will prompt our users to stay online (and particularly, not print out the puzzle and solve it on paper) and to come back frequently.
Common wisdom says that those are social features, but what kind of social features lend themselves well to such an application and audience (which are a bit older than the usual web 2.0)?
Are there any websites that has had success in connecting a more mature audience than we're usually targeting here?