I know, I know, posts about grammar are ho hum. Still.
People, you gotta stop trying to sound smart by using 'whom'. Most of the time, 'whom' gets used improperly. I only say this because I've noticed its incorrect use more often in the past month or so, on various sites that I visit. So, please, just stick with the 'who'. At least when it's incorrect, it's not as noticable. Okay, people? As for which people, you know whom you are.
Also, since I'm here, please be careful with the 'blank and I'. I know teachers drilled it into our heads in elementary school, but, alas, it went to the opposite extreme, and now 'blank and I' is too often used incorrectly. "The pizza was eaten by John and I" is incorrect, for instance. It should be "John and me". Yet, I see this very thing happening all the time. (I am so La De Da)
Here's a simple test to know if you are using it correctly: When you are writing a sentence where you wonder whether it should be 'blank and I' or 'blank and me', separate the names, and read the sentence with each as an individual entity.
The pizza was eaten by John. (that's okay)
The pizza was eaten by I. (that's not okay)
Anytime you're in doubt, just try that test, and you should see which is correct.
I just had to get that off my chest.