TechCrunch has accumulated a list of the twenty most popular Twitter applications … By popular demand, here is a list of the Top 21 Twitter Clients (According To TwitStat). 1. Twitpic 1,236,828 2. Tweetdeck 285,864 3. Digsby 233,472 4. Twittercounter 212,200 5. Twitterfeed 149,812 6. Twitterholic 147,164 7. Twhirl 143,333 8. Twitturly 88,793 9. TwtpollRead… Read more »