Forums instead of social media, IRC/ICQ/AIM for chat, websites were much more static.... unless using Flash, newgrounds full of Flash games.

FTP/IRC was source of media distribution until transitions to, bittorrent was new, and napster, limewire, kazaa were things. Newsgroups have existed for all time, but not really including them because less mainstream.

Windows would allow broadcast messages to just pop-up on your computer. Needed to implement your own firewall like Zonealarm, these things weren't just default.... computers kinds of just 'directly' connected to the internet without any appliance in the way at first.

Edit: Oh yeah, and Steam didn't exist, so games were bought individually in boxes at stores, and valve games were like sharing your IP with friends, listing of servers... speaking of, early Counter Strike and stuff didn't have any anti-cheat.... if you added anti-cheat to your CS server when first coming out, people getting caught would be shocked, since they didnt know they could get caught, always in denial for 'false positives', and really find out who of your friends aren't actually good and were just cheating all along.