Creating mobile websites is as important as getting them ranked high on the SERP. The reason behind this is the plethora of mobile users which are growing at an overwhelming rate. For gaining higher positions on the ranking ladder, you must optimise your site.
Certain tips on effective SEO for mobile websites are as follows:

1. Make your search fast: Your mobile searches should give fast results. The users would be on the move and so would have no patience to wait for loading pages. So, loading time of searched pages should be less which is critical job of mobile SEO.
2. Modify content presentation: Content of mobile site should be specific to adjust to the screen size of the user. It should be relevant without long, unnecessary details and effective enough to take user to call to action pages.
3. Mobile search behaves differently: When user searches through mobile devices, few aspects like keyword length, location, browser, content etc. are very significant. Mobile SEO should consider these things and work on it to gain higher rank on the SERP.
4. Be predictive: The searched keyword phrases and categories should be mobile specific. Optimise content of mobile website according to the search behaviour of the mobile user. So, your site must be predictive for mobile SEO keywords so as to acquire higher ranking.
5. Accurate site submission: In order to gain maximum mobile traffic, you must submit the site in portals, directories and listings which cater to the mobile audience. These are the best source for gaining heavy traffic on the mobile websites.

Both mobiles and mobile users are growing at an exponential rate. This growing saga of mobiles say it all that it is not just about mobiles but about mobility! These concerns should be addressed while doing mobile SEO. Once done properly these would make your site quite famous in the mobile world!