A lot of sites do this. I suspect it could be related to storage capacity. Elimination of one character millions of times over could potentially add up to some space savings. That's just my guess though, an ASCII character doesn't exactly take up a lot of storage space either so I could be way off base.It was always two spaces after a period and one space after a comma. When I post here I always use two spaces after a period but when the post goes live it's always reduced to one space. I notice it when I go back and edit. After this sentence I'll use five spaces to see what happens. Well?? What do you see??
I'm a 2 spacer. That's how I was taught in typing class and it would be difficult for me to break that habit now.