One remark: there's often a general assumption that b/c Yahoo [or any large company] has been around a while, they have a very good idea what's going on. Might

One remark: there's often a general assumption that b/c Yahoo [or any large company] has been around a while, they have a very good idea what's going on. Might or might not be true - many companies often do surprisingly suboptimal things - beware of falling into the "What is, is efficient" trap.