Wow! I never realized just how much I didn't know, until I took this challenge! I am now trying to figure all the finer points of twittering. I told my 17-year old daughter that I was learning about twittering, she seems to think I will never really catch up to the 21-century. This probably has something to do with the fact I refused to get a cell phone until 4 months ago and I am still using "abc" when I text instead of using "word". She has unknowingly thrown down the gauntlet!!