Yeah lots of webmaster talks going about .im domains these days. .im stands for the Isle of Man which is is a self-governing crown dependency located within the British Isles although constitutionally separate from the United Kingdom. In 1996 the Isle of Man Government obtained permission to use the im National Top Level Domain (TLD) and has ultimate responsibility for its use. The domain is managed on a daily basis by Domicilium (IOM) Limited, an island based internet service provider.
So is it worth to buy? answer is yes, because .im can be called as instant massaging and its a very short extension. So the official domain registrar is www.nic.im and a domain costs £40 per domain but www.name.com offers one year registration for just $5, But renewal fee can be high after 1 year! .im domains will be really worth to buy and there are nice small letter domains available right now for registration. 
I just bought www.Proxify.im for my new proxy site! 
Buy your domains right now people.
Bye
Why did you choose that domain?
Can you remember the times that the .info domains came out? Those days people didn't took much attention to it! But now all things has changed. This is the best time to buy .im domains before the valued slots filled out!B)
.im has limited geo so not much sales we can expect
but heck we can get few keywords as now its just 5$
yeah lots of more keywords available now! But the extension .im worth it because its easy to spell and short!