What do you like best?
The fact that it serves as a great resource for launching content to a global social media audience. A lot of the community on this website is comprised of professional internet/social media/content marketers. So the community that uses this software are some of the brightest in the business. Because of that, its really cool to see who shares your content and helps spread things viral.
What do you dislike?
There have been times when I submitted content that was not approved, even though it was editorial in nature. To that end, make sure your content is high quality and relevant to a wide audience before you submit. Also, there are probably some categories that could be added. All in all, however, I quite enjoy this tool and the 'likes' far outweigh the 'dislikes'.
Recommendations to others considering the product
Make sure your content is actually worth sharing before submitting it to Viral Content Buzz. Add a hashtag to your titles - it helps their viral spread on Twitter when you use this service. If you are looking specifically for a viral solution for Facebook and Google+ - you may want to consider another source... but VCB is great for Twitter shares, Stumbles, and Pinterest pins.
What business problems are you solving with the product? What benefits have you realized?
This tool does a great job of helping your content get shared - especially for businesses that have great content but lack a large community of their own to help get the word out. We have seen several of our posts go a bit viral (thanks to StumbleUpon, especially), and the new traffic source has been greatly appreciated.