Family Man: Tracking cookies can be used to track your behaviour on various sites, but they can't really do any harm to your computer. Some sites store more than one cookie, so if you browse some commercial sites, you can easily get a high number of them in a minute. But they are definitely not causing your problems with forecastfox.
(hide) If you want to always be warned about the latest post on a discussion board, you can receive the posts on your news client by clicking the RSS logo at the top right of each board. (pauloaguia) (show all tips)