The objective of the RSS Awareness Day is to get as many people as possible talking about RSS and its benefits on May 1st. Bloggers and blog readers are already aware of the RSS format, but if enough of them talk about it perhaps the mainstream media will cover it as well, and the general public will get exposed to it.
If people start reading about RSS and how it can help them everywhere, I am sure that some will get curious at least to try it out. Over the time the usage of the format should pick up, and all the Internet users (including content publishers) gain from it.
Daily Blog Tips is encouraging everyone to ensure they have their RSS feeds working and displayed prominently on their site. On May 1st they are asking everyone to discuss the importance of RSS feeds. This Daily Blog Tips article, May 1st RSS Awareness Day: Get Involved, explains exactly what they're trying to do and how you can help. You can even win prizes :)
I use RSS, you can subscribe to my blog here.