Harald, it looks like the response you've quoted is from http://groups.google.com/a/googleproductforums.com/forum/#!category-topic/webmasters/crawling-indexing--ranking/9MGYEoROdkg, which is a question about a menu that has javascript. I think this poster has a slightly different question. I'll ask another associate to come on in and take a look.

A couple of recent great resources about redesigning websites without losing rankings are available at

http://www.seomoz.org/blog/achieving-an-seo-friendly-domain-migration-the-infographic

http://www.seomoz.org/blog/web-site-migration-guide-tips-for-seos

They are aimed at migrating your site to a new URL, but much of the information they have is applicable in your situation about URLs and things to consider during a redesign.

Hi WalesDragon,

Did these answers solve your question, or are you looking for some more advice still?

It is people visiting just one page and leaving. They might be on there for five minutes, but because they aren't doing anything else on your site (like clicking to another page), there is no way the time can be recorded.

In your situation, I'd look at what organic keywords are most associated with this data. Are you writing about calico fabrics and at one point mentioned cats, so you're getting visits from people searching for calico cats and they're leaving? Look at your landing pages, are there particular pages with high bounce rates? Is there a browser with a high bounce rate? Maybe something isn't rendering right, maybe there's a link going to a 404 page, etc.

At SMX West last month, Duane Forrester from Bing was talking about social signals and Bing, and saying that they look at who you follow as a signal, just like they look at who you link to. You don't want to link to a bunch of spammy sites, and you don't want to follow a bunch of spammy profiles.

I realize that you asked about people following you. Some of the twitter services (though it doesn't look like this is the model of Twiends) for gaining followers follow a bunch of people in hopes of getting people to follow back, then unfollow those who do not follow back. I'm pointing this out here for people in the future reading this and considering other ways to get followers.

Followers don't necessarily read your tweets, much less go to your site. I occasionally tweet from the SEOmoz Twitter account when Jen is unavailable, and there were a couple of times I inserted a bad link into the tweet about that day's blog post. I was amazed at the number of people that I got that immediately retweeted the SEOmoz tweet -- they obviously were not going to the site, but just trying to look like a "real" account by retweeting things from a known and trusted account.