Yahoo! gained 0.5 percentage points in comScore search engine rankings for January 2009. Google just happened to lose the same amount of percentage points during the same month.
But they're not the only two swapping points. Microsoft stole 0.2% from Ask.com.
These are small percentage points, so things mostly stayed steady. If these trends were to keep up, that's when things could get a little interesting. So, stay tuned. In the meantime, here's the raw data:
YouTube is still giving Yahoo! a run for its money.