Long time lurker here and just now registered to start asking a few questions as I'm about to upgrade to the 13" MBP. (btw - Thanks for all the valuable info on this site!!) How do you prep a Mac to sell? What's a reasonable way to wipe the hard drive and all personal identifiers, etc. I'm assuming you leave OSX. I would like to kind of develop a checklist and wanted some expert advice. I've never sold a computer before and my current old Macbook (2009) is probably not worth it to me to sell, but I might. But, I'm seriously thinking of selling my (just purchased, not delivered yet) MBP next year or two when the next generation arrives and continuing on that cycle since MBP's seem to hold significant value. Thanks for any advice!