Language change - is it a good/bad thing...?

Following our discussion of more recent examples of language change, looking at neologisms/popular slang words from 2001, many of which may have already failed to survive the test of time, I would like you to consider the following for your next blog entry:

- Summarise the arguments for/against language change 

- What is your view on language change? 

- What do you think are the most important influences on language change? And why might this be the case?

- Do you think some of the more recent additions to the language will survive? (e.g. peng, bare, butterz, mandem, bbm, cba, lol, i-phone, i-pad, smart phones, fraped ....etc). 

Also, don't forget to read each others! (And comment if it will let you..  :S )