I've been waiting for the omniweb 5 to come out for a long time. I've tried a beta, but it was not stable, however I loved the features.
I've been testing for some time now and I'm still not jumping from joy. It can do all that Safari and Firefox and more. I has features that are actually useful and cool. But, I feel this edition is a bit premature.
The google ads, that you can find on almost every site nowadays, including CreativeBits really are useful. The most important positive thing about them is that they are relevant to the subject of the page, because Google matches the theme of the ad to fit the content of the page. Also, Google ads are relevant to the place you're visiting from, because based on your IP address Google can guess your location.