Anything under 100k is inadequate. Never include any contact information. Unless it's on level 8 of your site. Bad spelling is more difficult than it appears, but homonyms usually escape spell-checking. With the degradation of written American, it can actually be quite difficult to come up with prose which is riddled with spelling errors which doesn't look OK to the average user.
Adverbs are fertile ground.
Chances are, in attempting improper usage, you will stumble upon the correct usage. Use frames in profusion, no less than five per page. A chance encounter at the Martini Club took us to Integrated Systems ' website. Despite our being warned off, we found the site to be useful, informative and easy to use. The Web is about fulfilling users' perceived needs.