More a potential problem really: I could make a post like "hit 'like' if you dig vanilla ice cream!", a bunch of MPs with a sweet-tooth would like. I could then go back and change my post entirely to, lets say "like this post if you support Mubarak!". As far as I can see, there would be no trace of my original post, the likes would still be there - but the ppl who 'liked' wouldn't get a notice that the post they liked (but may not like so much anymore) had been changed. If you lose likes when you edit a post, it might dishearten ppl from correcting/maintaining/improving their content, and thats no good. Showing what was edited in the post itself could make it long and chaotic to read in some cases. Simply marking the post as "edited" would give no information as to what was written before the edit, but it might work as a link to display what the post looked like before the edit, which is maybe my favorite solution of the ones I can think of just off the top of my head now. It's not a big issue, but I think we should discuss it before the 'official' opening, and before it turns into a problem.. What's the best way to handle this?