This article is pretty good, explaining recent discoveries in a clear way. The jist of it? LDL & HDL (types of cholesterol) have long been cast into roles as "bad" and "good" cholesterol, meaning that foods high in LDLs such as butter, eggs, bacon & red meat, have been labeled 'unhealthy.' Now research is saying it isn't so neat and tidy.
For me, this is just one more finding backing up the 'traditional food' movement, which advocates whole foods that have been eaten for centuries, cooked in slow methods, and not vilifying any one food group (such as meats or fats) but rather embracing all in their proper place. In other words, eating natural sources of saturated fats isn't just ok, it's needed for health-- it's what traditional cultures around the world have thrived upon, and what our own ancestors ate!