Most performance problems with websites/webapps out there are just due to sheer nastiness of the shovelware that they embed. No need to have fine-tuned debuggin

Most performance problems with websites/webapps out there are just due to sheer nastiness of the shovelware that they embed. No need to have fine-tuned debugging and profiling when the main fix is "don't accidentally run this jQuery selector 1000 times on every click". Very low hanging fruit.