Back on November 30 I reported that with just a simple title change we had lost our sitelinks. I guessed at the time that Google was probably just trying to figure out which links to put there (perhaps guessing that a new title would attract different visitors and that the links would change). This guess turned out to be correct and today (2 weeks later) we have regained the sitelinks.
So if you have sitelinks and you’re pondering changing your title – you’ll likely lose them but don’t panic, it doesn’t last long.
SEO news blog post by Dave Davies, CEO @ 12:13 pm