lucy24 - 2:55 am on Nov 24, 2012 (gmt 0)
Lowlines _ count as \w for RegEx purposes.
Hyphens - don't, and cause further inconvenience in groups.
If it doesn't fit neatly into a Regular Expression, sooner or later I will have to do something by hand.
Nowadays, you don't need any extension at all on the end of the URL for a page.
I agree, you don't need anything. I use ... .htm for webpages.
I certainly wouldn't do any other extension like .php or something that divulges the underlying site technology
Then again you can pack your html pages with php includes that are coded to look so pretty,* nobody will ever suspect ;)
* I'll do a lot to help people on satellite connections, but I absolutely draw the line at minifying. It makes my skin crawl just looking at the result, and to heck with that 15% savings.