We all know Google shows sitelinks for the cool kid sites – i.e., reputable websites – but the question here isn't "how do they determine which sites get sitelinks in their rich snippets?" Rather the question is, "how does Google determine which links get placed into the sitelinks snippet?"
From the horse's mouth – none other than Mr. Google himself – we learn that "we (Google) show sitelinks whenever we think that they might be especially helpful for someone...the way we compute that is algorithmic." See the full video here.
Interesting. Normally, with consumer sites, say West Photo, we'll see sitelinks such as "Rental List," "Promotions," etc:
While that's all well and good, yesterday I happened to stumble across an interesting rich snippet for the Yahoo Directory...it seems Google thinks sexuality is not only "helpful," they think it's ESPECIALLY helpful:
What'll be interesting to see is whether or not Yahoo decides to change that (by utilizing Webmaster Tools). If not, then go Yahoo!
Has anyone else run across other interesting sitelinks?