On the user's tags page (e.g. http://stackoverflow.com/users/1/jeff-atwood?tab=tags), I think labelling (via tool-tip) the number next to the tag as 'total score' is misleading. It is apparently calculated by the number of votes the answers provided by a user has received, however reputation is also referred to as 'reputation score' in the tool-tip. I wondered why my score for certain tags was not higher as it should score 10 for a voted answer.
I think replacing score from the tool-tip text to would be clearer, for example 'total votes'.