Many Twitterers (or tweeple, as users are sometimes called) stick to the original social networking goal for the site, which is to answer the tag line question each time they tweet.
The young man questions the validity of this, even of the "twitterlebrities" (caricatures of Warren Ellis and Guy Kawasaki are featured) and suggests that none of the twitterers actually have any friends.
As the great white leviathan gobbles up the twitterers, the two men realize they've broken twitter, and marooned all of the users in a sea of irrelevance.
Many Twitterers, especially businesses, include links in the posts.
Social Oomph not only sends future tweets for you, but it will automatically shorten URLs, follow Twitterers that follow you and unfollows users that delete you from their profile.