Yes
speech marks are use to caught some or your speech
I fancy that an etymology will generate this from Mar - a minor defect or blemish. And hence the wide body of actions that may flow from this. (Borders, branding, in sports etc.)
Mark Twain died on April 21, 1910.
How many.
Loaded: Sysomos Blogosphere Demographics, Google Docs and Facebook Privacy
Google and gaming: Loaded 28-07-2010
How to Password-Protect User Accounts
Learn about Bailout 4: Mark-to-model vs. mark-to-market