Depends on your visitors.

If 95% of people are fresh from the search engines, then rotating text is wasted on them; they've never been before, and may never again, so a page that simply evolves over time, would have the advantages of stability and being up to date. Some rotating text systems leave the content as invisible to SEs, so can be a disater for you key page.

On the other hand, if you get a fair proportion of returners, then there may be mileage in a rotation - provided it's not iframes or javascript or some other system that makes the page a black hole to spiders. And to some browsers!

Thanks for the info. I had no idea this would lead to SEs not being able to see content. My boss seems to think that we should change the content on a weekly basis so that it is always fresh to the SEs. This is his idea. I've never really thought of it like that. What are your thoughts?

There's nothing wrong with updating a site - but a better way to do it is to add new, extra content.

Simply rotating content doesn't help with the searh engines, indeed, it leads to searchers thinking "This is the wrong site - 'bye".

Change for the sake of change doesn't really help anyone - unless, as I say, repeat visitors are a major issue and you have nothing new to say.

As the main page is so vital to both humans and SEs, I'd go for stability, though new links, and features won't hurt.

Don't forget the site has many pages - not just the one. If he's worried about other topics not being picked up - the answer is more, new , extra pages.

In fact, the answer is nearly always more, new , extra pages. :)

I agree with Quadrille - new content on more pages is a better idea than rotating content. The exception on content rotation would be something like a news site, where key pages get many repeat visitors looking for the latest information.

I'd distinguish between "fresh" and "rotating". Like a news site, your key pages can summarize and link to new content on other pages. Merely changing the same old stuff in and out doesn't seem advisable.

Changing content can perplex visitors from search engines. If they found your site because they searched for "collecting widgets" and your home page featured an article on that topic, but see an article on "cleaning widgets" when they arrive, they may hit the back button.

A blog is a great idea if you can find the time to keep it updated. One key selling point for the boss: it exposes your site to different search engines (Technorati, Google Blog search) and, since search results are often sorted by date (rather than a ranking algo) you have a shot at getting some traffic even if your site is new or poorly ranked in Web search. Bloggers are also prolific linkers, so you may get new inbounds if you can post some compelling content.