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Besides the obvious, is there any way to improve your chances of getting these to show up? Do your anchors need to be explicitly linked to in your page? Most pages I see that 'get' these links, use the deprecated 'name' attribute. Any insights?
Wikipedia has a lot of this type of source code on their pages, partly because of their internal linking. It seems clear to me that Google search results will not (and even technically cannot) offer an internal page fragment link unless such an anchor actually exists on the page.
Even then, I'm thinking this type of mini sitelink would still rarely be a page fragment unless there were also external links pointing to it - and probably in a significant number.
[edited by: tedster at 8:43 pm (utc) on Aug. 24, 2009]
Google started to show some special sitelinks for Wikipedia articles... The sitelinks for Wikipedia results are special because Google doesn't send you to a different page, but to a section of the article. This is especially useful for long articles that include a lot of information.
This particular source bills itself as "unofficial news and tips about Google", so take that into account. But it looks like this new feature is only for long Wikipedia article pages right now. If anyone spots page fragement sitelinks for any place other than Wikipedia, that would be interesting news.
My guess is that they won't, since sitelinks happen site-wide and in-page anchor links could happen in every page within a site -- Webmaster Tools doesn't allow for all that much granular page tuning.
Certainly, the W3C is loaded with them and they are very useful. The main hassle is having to bring up the source to find the #?-?-? used. For a site like W3C I would like to see the fragment identifiers noted in the text, so that I can quickly add it to the page URL when making a reference.
I have seen today a single mini sitelink (or better called, "bookmark link") which is shown in SERPS at the beginning of the "description" of the page (i.e. it is not a separate line below page title like ordinary mini site links). This single "bookmark link" is preceeded with words "Jump to" followed by link, followed by colon, e.g. "Jump to _____:" where _____ link exists as a bookmark on the page.
I have observed this for two different sites, one on Google.com and one on Google.hu. On hungarian google, instead of "Jump to" the wording in hungarian was something like "Go to ______ section:"
The rest of page description is replaced with extract from bookmarked section.
From what I can see from the two pages that got this "Jump to" link:
- The page has bookmark(s)
- There is a link to a bookmark within the same page (in both cases where I observed it, the link to bookmark was on the top of the page)
- under the bookmark was a collection of other links (e.g. similar to directory)
[edited by: tedster at 9:02 pm (utc) on Sep. 10, 2009]
Well I'll be [puts on best Gomer Pyle accent]. Amazing how Google is now looking at various accessibility elements in its algorithm. Or maybe I should say, amazing how Google is now displaying the results of it's intelligence level.
Protocol states that UAs dereference everything after the hash symbol. I guess that is no longer the case. :)
Uniform Resource Identifier (URI): Generic Syntax
Fragment identifiers have a special role in information retrieval systems as the primary form of client-side indirect referencing, allowing an author to specifically identify aspects of an existing resource that are only indirectly provided by the resource owner.
As such, the fragment identifier is not used in the scheme-specific processing of a URI; instead, the fragment identifier is separated from the rest of the URI prior to a dereference, and thus the identifying information within the fragment itself is dereferenced solely by the user agent, regardless of the URI scheme.
Clickable Title Text Is Here
Jump to: [Page fragment link] Main article: [General snippet continues here...]
If anyone spots page fragment sitelinks for any place other than Wikipedia, that would be interesting news.
Perhaps old news by now, but worth noting, and the site is a standard enough source that we can mention it specifically....
Internet Movie Database has also regularly been showing page fragment sitelinks on searches for movie actors, directors, writers, producers, etc. People with multi-faceted careers show more identifiers, and there seems to be a certain threshold of activity needed before the identifiers kick in. imdb and Wikipedia are often 1 and 2 in such searches.
Introduction to HTML 4
Jump to Fragment identifiers: This kind of URI ends with "#" followed by an anchor identifier (called the fragment identifier ). ...
www.w3.org/TR/html4/intro/intro.html - Cached - Similar
The primary link is to the page, but the Jump to "Fragment identifiers" is linked directly to the anchor.
<h3><a name="h-2.1.2">2.1.2</a> <a name="fragment-uri">Fragment identifiers</a></h3>
The <h3> text is not linked, but wrapped with anchors.