Last night, on my home computer and using Chrome, I Googled something for the first time and clicked a few links. Naturally if I Google them again on that computer the ones I clicked on should come up as purple visited links.
I just Googled the same thing on Chrome on my work computer and the links I visited last night are purple coloured visited links. Clearly it used my logged in account to keep track of what I went for and updated the Chrome output accordingly.
This was really useful. It's like having a big brother looking out for you, or something.