Last week I blogged about the opportunities to buy airline miles with US Airways Dividend Miles and Avianca-Taca Lifemiles at greatly reduced costs through sharing them with someone else who shares them back to you. These two promos will be ending on 15 Oct so if you had it in mind to take advantage, then do it now! I didn’t partake this time as I have enough miles in these two programs to meet our needs for the next couple years. You shouldn’t buy miles unless you plan to redeem them within a year or so as they may depreciate. Here’s the details in case you missed it the first time.