In some cases, when you conduct a search at the world's second largest search engine, YouTube, the results may be crossed out.
Here are some pictures, notice how the search query you entered may have crossed out keywords.
At first I thought the words that were crossed out might be stop words or words that do not relate to the query. But "people" or "marathon" or "organizations" would be equivalent to "and" or "or" and so on?
I am now thinking that the words that are crossed off are the words not matched in the search query. Meaning, the word "marathon" was not found in the search results for this long search query. Maybe?
Forum discussion at Google Blogoscoped Forums.