I'd greatly appreciate if someone could help shed some light on what is actually going on here.
See, the initial Constant Contact links look like this:
If that redirects to a page that produces a SERVER ERROR, is the responsibility not on the website's part to handle the request? The links are correct. If the listing doesn't show up and it says server error, it does when you refresh. Plus I've seen the same error just when browsing the site, which disappears upon refresh. So... can anyone explain this actually for me please?