Wwoof (ebay for farming) and others
Latest things I am tracking:
WWOOF - world wide opportunities on organic farms - ebay for farming - "WWOOF is an exchange - In return for volunteer help, WWOOF hosts offer food, accommodation and opportunities to learn about organic lifestyles."
Devo - keyboard command launcher (thanks Kortina)
Twitter Influencer - twinfluence
World names profiler - just try it