There can be a liking for recording information or a need to do so. Thus, it is an excellent placement for the diarist or the curator. This may be the person who records lectures, because there can be a need to be able to play things back, to be able to replay the past, to go back over things. Often there will be interest in history. Memory and touch may go together and some people may like feeling things with their hands.
Often this combination makes good writers, because they are skilled at expressing in written form subtle emotional states and impressions. But details and facts are not their forte. There can be tendency to judge information subjectively rather than objectively and their emotional states strongly impact their communications and ability to learn or manage daily practical tasks. Receiving and conveying of facts can be skewed by emotion and the personal experience will color their attitude to interpreting data, without their even being aware of it.
They can learn better by absorption and receive information in intuitive, non rational ways. It is a placement seen in good healers and doctors who help people using not only science but a personal touch and intuition.
There can be a need for a mother figure to talk to. Many with Mercury in Cancer, will take on this role for others. An attentive and sympathetic communication is implied.
Friendships take awhile to build and are based on deep emotional bonds. Often with women.