The title attribute in the page of a question like Comparison between $E_2$-terms of Leray and “second hypercohomology” spectral sequences is currently set to "ag.algebraic geometry - Comparison between $E_2$-terms of Leray and “second hypercohomology” spectral sequences - MathOverflow" and I'd prefer if the title started with the question (it could still contain a tag after the question, or do away with the tag altogether). The reason is that my browser (like most, I think) has tabs and displays the title in the tab; with a few tabs open all I can see of each title is the tag, which is not very informative: I'd prefer to see the intial portion of the question.
EDIT: I followed Kaveh's advice and am using the following simpleminded script (this is version 2, as the first one was too simpleminded):
document.title = document.title.replace( /^([^-]*) - (.*) - (MathOverflow)$/, "$2 - $3");
If you use, say, Firefox, with the dotjs extension, you can store that text in the file named
~/.js/mathoverflow.net.js and it'll remove the tag from the question titles. (As you can see above it is a blunt tool, doing a simple pattern match to check to remove the stuff before the first " - ", if there is a second " - ".)