Many times I wondered "if they only knew MS Windows support on CompuServe relies on one intern working out of a frat house (at the UW)." I used a US Robotics modem running at 300 or 1500 baud without error correction. I had to write my responses in notepad and paste it in due to line noise.
Helping so many people every day was very satisfying and I am still proud of that work.