I have Dropbox on three desktop PC's in the house and everything syncs great. I have Dropbox on my Android handset and it allows me to download but that's all. I assumed that they would implement syncing but it seems like a forgotten priority for them going by their forums. So - any alternatives that will simply keep a chosen directory/set of directories in sync between a PC and my handset over the air/wifi? Only looking to sync a max of 2Gb.