Top Discussions?

For me, It went by how many people who have seen the discussion, and I'm still learning here nothing special.

Usually the discussion which gets the highest number of responses in a particular forum make it to the "Today's top discussion" and it also comes in the email which is being sent to all the members. One of my discussions appeared in that kind of email only once. My son also had his discussion once mentioned.

well i am not good at this kind of stuff though i am kind of being here for a couple of months already. but still i have lots to learn from this community. well for me, top discussions of the day got the most responses in that given day, i guess. whew! what am i doing here.. lol! i do not even know this much about this stuffs. but we can always learn. hope some would respond back as well. so that i may know what this would mean.. jhelai