Is there a way to synchronize my installations (and removals) between multiple PCs?

Preferably with dropbox - since I'm already using that to keep my files in sync.

Edit: I thought of an alias for the apt-get install and apt-get remove commands that stores the parameters to a file (one for install, one for remove) and another command that reads all the entries in the file and executes the respective command. Is this an realistic approach?