mylot gives level in interest what does it mean ?

hi first of all thanks for your advise but i do want to clear one thing i agree that i m a experienced user of mylot and i joined mylot when its started almost 2 and half year back. i was participating actively on that time ... 2 year back no level system was introduce and i was away from this discussion board for long time.... few months back i started visiting this site again so i notice lots of things have been changed which i really dont know. so if something i dont know i dont see any bad thing to ask or discuss those thing with community members ...and second thing its not a topic for discusion i just have a question which answer i dont know and i thought anybody who is actively participating on site will help me to know this simple query. this was the only intention to start this discussion if you still think i have started this just to get response than its my humble request for mylot team pls do remove this discussion. anyway thanks for advice. Rajiv