Not that I’ve noticed. The fonts are served from site that are optimized for fast delivery. Occasionally there’s a eye-blink delay as the default font loads before the linked one.
Do you have an example of a site where you used this?
Not that font, but a large number of sites on the web use these web fonts now. The fontdeck site itself uses them, so that’s a good way to see them in action.
I can only take that’ guy’s word for it. At least some of these fonts are very commong to MS Office on various platforms, so perhaps there’s an assumption that most people have that installed? I’m not sure. To be safer, you can use a web font served by a 3rd party provider, or serve up the font yourself via @font-face (using FontSquirrel to get the files in order), to be reasonably sure the end user will get it.
I wouldn’t put too much stock in that blog post you found. Some of the fonts in the article are common to either Windows or Mac but not both, and the guy paused in the middle of the article to hawk a sitebuilder.