It may have made things more dangerous id the very short run. In the long run, he is not much of a martyr caught cowering in his million dollar bunker. As for being safer, there is this. http://www.foxnews.com/us/2011/05/02/cia-analyze-electronic-evidence-seized-bin-laden-compound/

Fox is reporting a large quantity of valuable information found in the compound. Fox is no friend of the Administration. So there is probably some truth to the report.