Google recently introduced two new changes to their AdWords system. (via Inside Adwords)
Simplified Keyword States: Keywords will be placed in to one of two states – active or inactive. People like the idea of something that’s a little more binary – on/off, day/night, hot/cold – you get the picture.
Increased Control: We’re replacing the static USD $0.05 minimum bid for all keywords with a minimum bid that varies based on the quality of your keyword and ad text. High quality keywords (determined by the Quality Score) will have minimum bids as low as $0.01, while keywords with a lower Quality Score will be assigned higher minimum bids. As long as the maximum CPC meets the minimum bid, your keyword will be active. You no longer have to worry about on hold, in trial, or disabled keywords.
Both these changes will help advertisers improve their campaigns – I like the lower minimum ad bid corresponding to higher quality.