So i've been curious to find out what the hype is with all of the Twitter apps available...in particular, i'd like to know if Twitterific and Twinkle use SMS. I'd like to be able to try one of these apps, if not both, but since i don't have an unlimited texting plan i'd like to wait for confirmation before i test the waters. Is anyone here a Twitterific/Twinkle user, or both, and can give any input on if i will be charged text messages for using them? Any advice would be great...thanks!