A nice site to check your SEO ranking

Its imperative for every web marketer to check positions of their respective keywords in major search engines. There are several sites designed to get search engine rankings in a time. But it will be difficult for techies to go to such websites every day and make manual checking. Hence its nice to have a graph of keyword with their ranks and also support for multiple domains at the same time.
I was looking for such a service and reached Rankscanner. I became a free member and added right now my 4 client sites and their targetted keywords. Hence I am able to know their respective positions in my target search engine (google co.in) every now and then.
Hope it will help enthusiastic search engine marketers, SEO guys, website owners etc. to know where are they placed. A silver package with €9 per month is worth buying as they offer free SEO techniques too.
Iam a big fan of http://rankscanner.com now..One of the nice tool that a web designer should have!