You don't have to submit we will find you. He have a bot, I apologize I don't recall the user Agent at the moment... It comes from a Google IP address since we are running on Google AppEngine. So we have less control over the bot's user agent than I would like.
We will as more people use us. We think that because we provide a summary of your page rather than a snippet that we drive more traffic if you are deserving of it. Snippets don't really "sell" your content or your writing style. Summaries do. We think that by giving people more insight in to what to expect rather than part of a few sentences with the keywords you searched for in them, that we help users make better decisions about what to read.
An object is a single blob of data. S3 objects vary in size from 1 byte up to 5 Terabytes. They can be uploaded with a single PUT, or with multiple PUTs in series or in parallel (which we call multipart upload). They can be downloaded as a unit, in full (GET) or in part (range GET).
