| Answer | Crossword Clue |
|---|---|
| USENET | Online-group system |
| USENET | Online newsgroups system |
| USENET | Online discussion system |
| ECASH | Online payment system |
| OPENID | Online authentication system |
| USENET | Online newsgroup system |
| USENET | Early online newsgroup system |
| INTRANET | Limited-access online system |
| USENET | System of online discussion groups |
| EEEEEEEEEEEEEEE | Online IRS document submission system, literally? |
