Google Base is the best way to get your content to Google if you have a lot of content. Yes, it works if you have a little content but for large inventories it rocks. There are still questions regarding standards or whether or not they should give Google all their inventory information but the truth is, if you're going to put the information on the web, Google is going to get it. After all, part of the Google mission is to “Organize the World's Information.” That's a good thing in the right context.
What many people may not understand is that if you have just a little information and it's not in an RSS or XML feed then you still have a some great options. Blogs are great and Google has that too. No not Blogger, but the Google Page Creator. Here, you basically create a website or a blog site using their online tools. No I'm not trying to sell it, I'm trying to explain a solid option for getting your information indexed almost immediately by a Google bot. So if you're not being effective at getting Google to index your website, try Google Pages.