1script - 9:32 pm on Aug 19, 2012 (gmt 0)
Yet another controversial ranking technique has been patented by Google!
CTR is very much influenced by both the title and the excerpt and both (excerpts more often than titles) can and do get edited by Google anywhere from the exact tag match (meta description, title) to some machine-code looking jumble. The latter obviously does not help you with CTR and so this can become a positive feedback system, i.e. Google did not do a good job constructing the right excerpt, your CTR suffers, you slide down the SERP page, your CTR lowers even more, you keep moving down in ranks, all of which is without you actually doing anything.