For the grammar police: One space after periods, people

[pokerfan]

135. Your computer is not a typewriter

One space or two spaces after punctuation depends upon the typeface, I think. I really don't care about what's considered "in style." My concern is legibility and clarity of communication. I believe, given a decent proportionally spaced font, two spaces is unnecessary. You already have a punctuation mark followed by a space followed by an upper case letter. If that's not enough to readily indicate the beginning of a new sentence then either change fonts or by all means feel free to insert an extra space.

Times New Roman is lovely.... when printed in narrow columns ala a newspaper. This is because it's a rather cramped font, overly proportional, if you will. Works great in newspaper columns, not so good when it's spread across the full width of a page. Use one of the book typefaces instead. I'm a fan of Century Schoolbook as my go-to serif typeface but there are many others.

Another thing... Please stop underlining, people. This is definitely a holdover from the typewriter era where there were few ways to highlight text other than to back up the carriage and lay down a string of underscores. I have a couple of issues with underlining. The first problem is that it wipes out those lovely descenders of whatever typeface you're using and this interferes with readability. The second problem is that if someone is reading your work electronically, they will invariably feel compelled to click on the underlined word or phrase, assuming it's some sort of hyperlink. Don't waste your reader's time. Use italics instead, bold if you absolutely must.