How do you send free sms from?

Well, there is no such thing as "free" SMS - this is commercial service provided by network operators and you always pay for it one way or another - just sometimes not with money.. By sending "free" SMS you provide the website with confirmed cell phone number of your friends or family - which is very valuable information for marketing etc. Commercial sites usually have some privacy statement that at least promises your data will not be disclosed - but you will not find it on "free" websites. So in the end it is your choice of how to pay. Bottom line - before sending "free" message to someone think if the person you send message to will be happy to receive a bunch of spam messages from unknown advertisers..

I personally use TimeClickr for international messaging - they have good coverage, no contracts or plans, and they turned out to be the cheapest for the countries I was searching. They give few free trial credits so you can check if it works for you before paying anything. They also recently added the option to rent personal SMS-enabled phone number in some countries (US included) - so your friends can now respond to your messages locally - no need in international plans anymore. Pretty cool..