My myLot earning had decreased! What could have gone wrong?

I have been tracking my earnings though small. It was $0.98 the last time but now it has changed to $0.89. Does anyone know why? Can anyone refer me to any MyLot policy (if there is any) regarding...

AIDS virus (HIV) man-made! See proofs...

Here you can find (http://www.africa.upenn.edu/Urgent_Action/AIDS_Contract.html) a conspiracy theory that the AIDS virus (HIV) is man-made. Check it out and comment if you think AIDS virus (HIV) is...

myLot to myLost -- I lost some of my earnings!

Does anyone have experienced the same? Is this myLot's system? Please share insights.

What is the Star with a number appearing before the username stand for?

I have just recently realized (if it has been long existing) that there is a colored star appearing before one's username in the list of responses. What does it stand for?

What type of discussion or topic should I post to get a lot of responses?

I have been frustrated with the number of people responding to my discussions. I felt like I just wasted my time. Please suggest of what topic should one post.