How do you earn money for "rewards" on mylot

It's all explained here: http://www.mylot.com/o/faq/faq24.aspx Try using MyLot Search.

I don't know what are the other ways of getting rewards, but for me I received 11 cent as Reward on 25th of this month while I was searching for a discussion on the search Engine provided by this site. I think we are paid a reward to use their search engine. This is a good thing to practice to avoid duplicate postings! Normally duplicate postings are deleted, therefore to avoid the wastage of our effort it is always better to use search engine to ascertain that we are not posting any duplicate posting. I received reward for doing so! So all I can say is that using search engine can be one of the way we can get award on this forum! Thanks !

Use the search engine. Look for other discussions, or stuff on the web.