I've been trying to find summer housing on craigslist, and it's been mostly a failure. The biggest issue is the lack of semantic information in the listings. Fo

I've been trying to find summer housing on craigslist, and it's been mostly a failure. The biggest issue is the lack of semantic information in the listings. For example, every listing has a price, but it's mostly useless for filtering because some people list per day, some per week and some per month. There is also no place for listers to put the dates of availability (crucial information for temporary housing) except within the text itself. Providing richer semantic information would alleviate many of the issues, but the very structure (taken directly from newspaper classifieds) seems unsuited to the web. In particular, why must people re-post every day in order to be seen? Why can't they have a single post which they can keep current and remove when it's been taken? There are dozens obvious improvements, which could maintain the flavor while vastly improving the experience. Unfortunately, Craigslist still seems like the last word in the housing market, but hopefully that will change soon.