Hit Counters are used to determine how many people have visited a website, they can be set up to count each time an individual IP address visits the site, or every time the site is visited. Counters are useful to determine how many people visit your site, and how frequently it is visited.
RSS or 'Really Simple Syndication' documents are known as Feeds or Channels. They are used to keep updated as the original feed is updated, often used for distributing information from blogs or news sites. Google Reader is a simple way of subscribing to RSS feeds, in Google Reader you can add feeds and then they will keep up to date in your Google account.
HTML & CSS Coding Fun
4 years ago