Glossary

Domain Name -- The string (e.g., ibm.com) that is used to look up a particular IP address (e.g. 1234.56.78.99)

ISP -- Internet Service Provider (provides connectivity to the net)

OSP -- Online Service Provider (may provide connectivity, but also hosts substantive web pages and discussion fora)

Spam -- Unsolicited bulk commercial email (or, in some settings, widespread off topic posting to usenet discussion groups)