Distributing and collecting information for a plot

I am preparing to run a larger plot via a MUSH that will involve several scenes but the players between the scenes might change, so not everybody will have the same information when joining scenes. This also means that not everybody is present for all scenes, and not everybody missing a scene will be bothered to read the logs. On the other hand, some players have characters that reasonably can and will gather extra information in the time between scenes.

I am willing to distribute this extra information to players asking for them and write up primer for scenes so people can be brought basically up to speed, but I am worried that the information distributed to the asking players is not brought into the RP by the players but lost.

How can I encourage the more proactive players to distribute those pieces of informations to the other involved players?