Usenet could take quite a while to download your messages. All text websites and IRC were reasonable by the time of 33.6kbaud modems, but even by 1995 most websites had some graphics to download which were always painful. It only got slower from there as more was added each year.

This episode of computer chronicles may remind you of the joy and horror of that time period. Note that most of these people are actually on corporate networks not dialing in... and its still horrendously slow.

https://www.youtube.com/watch?v=wf6kVEN1lbk