TutorialBlog has a good article: 7 Things You Should Know About Web Writing
It discusses some essential thinking that should go into writing for web.

Including:
Reading onscreen is hard on the eyes - Use one third the number of words for onscreen as you would in print.
Keep blocks of copy short-
About half your readers will [...]

We were lucky to get a print ad spot in SES Magazine, being distributed at the SES Chicago conference this December. For those of you not familiar with SES shows, they are really a top-notch opportunity to soak up information about search engine optimization, attended by thousands of marketers and small business owners.

[...]

I posted this over at our sister site, Scrappy Upstarts as well.
As a scrappy upstart you have to consider what’s fundamentally necessary for your site and business to succeed, and what’s just fancy trimming. This certainly comes down to cost-control, but knowing what features to focus on that can be cost-effective and sales inducing is [...]

Entrepreneur.com’s Mark Stevens recently wrote an article entitled Sales and Marketing: Separated at Birth - I believe his intention was to discuss how one is nothing without the other, not sure he succeeded.
He writes:

The question arises from the fact that most marketing people dislike salespeople. They don’t understand selling and, even worse, have a disdain [...]

Twittad.com allows advertisers to submit ads for posting on twitter user pages.
You create an ad and every hour the ad is served, the Twitter user will receive money in their TwittAd account.

download Space Jam
“Our goal is to not fill Twitter with ugly & obnoxious advertisements. We give advertisers templates and ideas to [...]

Coming off this Paul Graham article Why to start a startup in a bad economy - Kevin Rose, founder of Digg and general Scrappy Entrepreanue hero, discusses starting up before there is a web 3.0 in this recent video post.
Rose points out that the darlings of Web 2.0 were actually started very early on, maybe [...]