As mentioned previously, language is always changing and new words are added to a language's vocabulary. However, is there a such thing as adding unnecessary words to a language?
There has been a survey done recently on the most hated words on the internet. Some argue that adding too many of these words will ruin the English language. Here are the top 10 words that made the list:
* Social Networking
Note the large number of blend words (or portmanteau) on the list, it is quite the prevalent method of forming new words.
The word blog itself is an ugly sounding word, with the hard consonants b and g and the unpleasant vowel sound [ɔ]. Blog is pretty much ubiquitous now, the name has stuck, and it's too late to do anything about it. Newspapers are freely using this word without explaining what it is (i.e. it is no longer considered to be technical term).
Blogosphere is a collective term that describes all bloggers. I've heard this term being used by bloggers even though they hate it, simply "'cause there's no other word for it."
Blook seems like a poor choice simply to describe a web-based book. The pronunciation is ambiguous (does it rhyme with look or Luke?) Similarly, a vlog is simply a video blog (why start with the seldom used consonant cluster vl- ?) and there really isn't a need for a special designation.
Netiquette and webinar would be better off using their offline counterparts. Just plain old etiquette and seminar will do, no need for a new word just because it's "online."
Next, folksonomy (a play on taxonomy) is a way of having your site's visitors categorize web based content by themselves. I haven't heard this term used much, by the way. On the other hand, social networking is a term used relatively often to describe myspace-like sites.
Lastly, cookie (in the online sense at least) and wiki may be too technical to be included as new words that would appear in a dictionary.