If you ask me what it means, and why it's important, I can explain it in a couple of paragraphs.
- HTTP
- URL
- URN
- URI
- REST
- SVG
- UTF-8
- UTF-16
- SGML
- XML
- XHTML
- YAML
- DTD
- MVC
- ORM
- SQL
- GPL
- DNS
- FTP
- SCP
- RSS
- ARP
- IP
- CIDR
- MAC
- UDP
- JPEG
- AJAX
- RAID
- SAN
- NAS
- MAID
- LDAP
- SGE
- GFS
- SSL
- TLS
- GPFS
- SMTP
- SNMP
- NDMP
Of course, so can Wikipedia...