do you care about your interest rankings?

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I find myself everytime I log onto mylot, after I check my earnings I have a habit of going to my profile and checking my interest rankings, for some reason I have a thing for numbers and rankings and stats, I like seeing how much progress I made in my interests, what about you? do you care about your rankings? if so how often do you check them? and one more question, is there a maximum level you can reach? I think I'm level 12 or 14 in making extra money, (I just checked but already forgot it, boy I'm getting old) but so far thats my highest one, whats your highest ranking?