I am not sure if this has been mentioned in all the welcome to Chowhound threads, but in case you have not noticed, the software here is a bit behind the curve. Now, when I look back at some typo ridden post from a few months, I rue the inability to edit, but mostly I can get by with what's here.
One great feature that Chowhound DOES have, is something called "hot posts". You have to execute it from the main Chowhound page--see link. Hot posts will show you any posts made from what ever day you indicate forward. It is useful to see what is happening and also to let you in on some old thread someone has discovered (as it seems like a lot of old threads are being discovered these days). Even though my preferred etiquette, if I am commenting on something mentioned in the past, is to start a new thread, with a link to the old thread, others often just ammend. Thus, hot posts lets you know.