exercising the mind

i am somewhat confused as to what this is... a 'log', a web 'log', is this correct? People keep saying the word 'blog' which i presume derives from 'weblog', that is a log that is kept on the web, or a 'website' to use its full name. So this is a 'website' log. 'Log', though, being short for the word 'logbook'. So this means i am currently writing a 'website logbook'...no wonder we use abbreviations.