Reputation "tokens"

OK, which one of youse guys gave me a positive rep for "Buffer and Differential Converter"? I'm not complaining, but I didn't help anyone, AFAIK.
On the other hand, I got a pitiful "balanced rep" for a reply to 'Question about the "LMC6001 pH probe amplifier" circuit', but his comment was

Thanks! You answered my question pefectly!

Click to expand...

Go figure.

I did that by accident once. Only remembered the comment and not the marker. I've seen to have lost a rep square though for no particular reason at all.