Ajax - preferred by some, hated by others
Ajax is not a genuine Joomla technology, it is just one of programming techniques to made a web page more attractive.
Google Indexing '?tmpl=component&type=raw' Webpages
When doing Search Engine Optimization tests you discover that your web pages are duplicated in the Google index. One record is correct and the other includes '?tmpl=component&type=raw' in the url. Usually panik strikes instantly... since the hype about Google's "duplicated content penalty" is still high, giving more, than 1,2 million hits, despite the fact that Google officially denied the existence of a dumb penalty for such a "duplicates", claiming that they are penalizing only copycat pages. so, it's mainly a false alarm... but since all SEO workers are living (and dying) form the confidence - or lack of confidence - of their clients, it's a problem, wich should be solved.
But let's see first, where these links are coming from, then we will find an easy cure for the problem itself.