What is the right choice? Please write out your equivalent of "Yahoo Mail fucking sucks" and we'll see if it conveys the same emotion and frustration in a similarly pointed fashion.
I haven't experienced any issues using the YUI css stuff; although I haven't tried to do anything beyond the common use cases. However, I think it's worth using if only to leverage the cross browser testing they've done.
You've already spent too much time worrying about this. Disable comments or just let him fade away (i.e. discontinue acknowledgment of his posts). If his pay off disappears so will he.
Is it feasible for you to start on the server and wait until it presents a noticeable performance problem(if ever) before going client side? This would be my initial inclination.
Thanks for bringing attention to this. I just started listening to one of the shows; aside from the interesting content it's also really well produced.