I use Arial with some added thickness so its kinda inbetween “bold” as it makes it easier to read IMO. This about the only font I can bare to use for small type.
Of course, there are some other fonts, linux (ubuntu) comes with a few nice ones but due to my work involving websites, arial is my main choice because of consistancy with the amount of computers /browsers that have it inaddition to the fact that it looks pretty damn good. A book I have here, now in front of me says “99.5% of all browser support arial” “nearly 100% of macs”, “85% of linux systems supprt arial” for any of you wondering. Visibone makes the book and im sure some of you would find it usfull - I have it because it lists every html tag so its a nice and good reference
Larger type, such as titles and so on im more open to other fonts but this is done depending on the “piece” in question so I couldn’t give you a specific name, and I think would be the same for most people. I infact have somthing around £100 worth of fonts due to the fact that one font does not suit all.
I would change the font used in my documents, especially if being printed as i know certain countries /areas are brought up around say serif rather than san-serif so it would be wiser and easier for people of that area to read if it was more “native”. This is why we designer must research
With electronic documents I find it pointless due to the fact that uses can quite easily change the font themselfs if they find it hard to read… Like lord of the ring’s recent document on 3D stuff I think it was… The spacing is horrible - but who cares? I can change it in 2 seconds.