I'd just like to know if it is ok to use other advertisements like widgetbucks on blogger.com? And can you use both widgetbucks and adsense on the same blog? If so how would Google's search engines react to my blogs just wondering because I know I'm probably the last blog on the search engine anyway.
Yes, it's fine. Competing ads are allowed as long as they don't look confusingly similar to the AdSense units.
google will react the same to whether you are the last or first on the search engine for a particular keyword... I wrote 3 short reviews on widgetbucks, if you are interested, please do read through them.. Make money with widgetbucks Is WidgetBucks Making More Money than Google Adsense? Is widgetbucks a scam?