I have seen the threads of Google changing the titles of pages, heck, I have been a victim of this myself, but it usually is about shortening the title to a keyword or not displaying the entire title.
Today I've found a new way Google is messing with your site titles - by adding your website's main keyword to the title of the internal pages!
Let's say your website is getting back-links with the main keyword being "blue widgets". And you have an inner page focusing on "super cool widgets". What I've seen in the past couple of days is Google changing the title of the inner page from "Super Cool Widgets - Get them here" to "Super Cool Widgets - Get them here - blue widgets" when you search for super cool widgets, for example.
What's up with this?!? I didn't see any recent threads about this, nor any posts from Google peons alerting to this change.
The way this is going - I may as well just buy the domain and transfer it to Google and let them build their own website...