Msg#: 4307687 posted 12:27 am on May 17, 2011 (gmt 0)
One heck of a good question. I haven't worked with site that uses images for navigation links in a long time. I would assume that an alt attribute on those images would give Google the text it needs and make the job of assigning Sitelinks easier, but I've got no recent experience to back it up.
However, note that the choice of Sitelinks is a complex algorithm today. In some cases, I see Sitelinks that are not part of the main navigation, for example.
Msg#: 4307687 posted 3:42 am on May 17, 2011 (gmt 0)
Do images with alt vs text for nav menus have any impact on getting sitelinks or not?
Yes, image nav-link alt text is one source. On one site I work with, where we have some text nav links and some image nav links, we've got Sitelinks derived from all of the following....
- text nav-link anchor text - alt attributes of image nav-links - destination page title (where text anchor is a synonym) - Google-assigned text based on onpage phrase that the destination page ranks for