Timo you have hit on something rather important.
Some may disagree with my next statements, but if taken with a grain of salt there might be something to appreciate.
Older, more educated, wealthier users tend to hang on and enjoy the long term sweep of things, but log in less... and less.. and less. Whilst young folks generally cherrypick the best of experiences and then move on. Over time, a community tends to turn into the former, as the latter keep churning through.
One way to limit this is require some mechanism for participation... or the user is *out*. One of the ways I do it on my estate is to allow only 12 weeks of rent paid ahead... no longer. Paid in $L. People have to 1) log in and 2) visit their parcel *at least four times per year*.
Sounds crazy, but there are a huge number of people who would pay me in years at a time. And log in just for that.
Hey, maybe make some mechanism where residents have to log in and do some really simple thing (pay rent, participate in a vote, participate in some other function) and if not... they are really more of an investor than a participant in a democracy, no?
Just a thought. Perhaps not an ideal solution.
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I've been away because I've been insanely busy, and quite up to some things Perhaps what would really work for the CDS is what worked for me: a Community Gateway that dramatically revitalised the country. It's something you could easily afford! Give it a thought...