Google has a keyword quality score that determines how much you pay for a given keyword, how frequently your ad appears, and in what position your ad appears. Few people realize that the speed of the landing page counts. That means that whatever page your Google keyword ads link to should be as fast as possible.
If you think the cheapest web host around is the best deal just consider how much you could be paying in extra Google advertising costs because your landing page is slower than your competitors! Optimize your landing page images, cut out graphics if you don't need them and certainly don't add Flash or Videos unless you really, really need them.