2. The communication system according to claim 1 , wherein the communication system comprises a phone conference system connected to a voice database, a post processor connected to a post processor database and a net meeting system connected to a net meeting system database, the phone conference system comprising a phone conference processor and the net meeting system comprising a net meeting processor, said net meeting processor being arranged to: present an image of at least one section of a document to said convener computer arrangement and said participant computer arrangement; said phone conference processor being arranged to: instruct said at least one recorder to record speech of said at least one participant and store recorded speech in said voice database; said post processor being arranged to: receive said at least one section of said document and said recorded speech; transform said recorded speech into one or more voice clips such that said one or more voice clips can be added to the document, and associate these voice clips with locations in said at least one section such that each voice clip is associated with a certain location in said at least one section and contains speech that was spoken by said at least one participant at the time that the image of said section was shown to the at least one participant.
2. The communication system according to claim 1 , wherein the communication system comprises a phone conference system connected to a voice database, a post processor connected to a post processor database and a net meeting system connected to a net meeting system database, the phone conference system comprising a phone conference processor and the net meeting system comprising a net meeting processor, said net meeting processor being arranged to: present an image of at least one section of a document to said convener computer arrangement and said participant computer arrangement; said phone conference processor being arranged to: instruct said at least one recorder to record speech of said at least one participant and store recorded speech in said voice database; said post processor being arranged to: receive said at least one section of said document and said recorded speech; transform said recorded speech into one or more voice clips such that said one or more voice clips can be added to the document, and associate these voice clips with locations in said at least one section such that each voice clip is associated with a certain location in said at least one section and contains speech that was spoken by said at least one participant at the time that the image of said section was shown to the at least one participant. 6. The communication system according to claim 2 , wherein said voice database comprises speech files, and said phone conference processor is further arranged to instruct said at least one recorder to record speech of said at least one participant in the form of a series of speech blocks per participant and to store each speech block of said series of speech blocks in a speech file in said voice database together with a time at which recording of said speech block started, an identification of a participant associated with said speech block and an identification of the at least one section presented by the net meeting processor at the time at which recording of said speech block started.