jakegotmail - 4:31 pm on Jan 31, 2011 (gmt 0)
I'm inclined to say that making the title more readable is preferred by Google, but that's opinion based and not fact-checked. If it's most appropriate for you to have and, or, the, etc. then go ahead and do so. If you can get away with a list, do that.
As for lists, what about list separators and their affect? Commas and colons take up a space less than a dash, but are they all equivalent? (similar to how Google says that they prefer hyphens in URL's but underscores are acceptable)
Does the repetition of the terms in the list weaken their effect per page if they are found on multiple pages on a domain?
ex: you have pages for all kinds of widgets ... red, blue, square, round, etc. ... but each title has the same format of "red widgets, history, reviews, information"
Are you in essence telling Google that every page is about "history, reviews, information" instead of the appropriate widget's?