I was at a Starbucks last week, waiting for my appointment at the DMV. This was the warning that Firefox 3 showed me, when I attempted to log on to the wifi network there.
Starbucks and TMobile need to fix their ssl certificates.
About a year ago, I saw this post the mentioned GreenDimes. GreenDimes is a services that stops junk mail. We donated the $15 (which is supposed to plant 15 trees), and then filled out the postcards that were in the packet they sent. Then when ever we received a catalog, I would enter that information on the GreenDimes web site.
Within a few months, we have seen a significant reduction in the junk mail and catalogs that we receive. I would recommend GreenDimes, as it has been working for us.