What Rick said, unless there is some greater reason that we're not understanding... If SEO is your concern, you'll want to keep your Page Titles consistent and not have them changing constantly, which will undoubtedly cause your ranking on the SERPs to bounce around like a kid on Adderrall.  For all my projects, I've used the built-in Page Title and Meta tags along with semantically marked up content and had spectacular results (also combined with a DNN-specific Robots.txt file, DNN's internal Sitemap function, and Google Webmaster tools).

However, one thing does pop in my head for the need for 'dynamically changing page title' and that would be in the case of a blog / news section where you would want the article to have a page title based on the article and not it's location in the website. Great news there however, because Scott McCulloch over at www.ventrian.com has a fantastic set of modules, in this case you'd be looking at the News Articles module, which allows you to define the page title based upon the article details.  He also has several other great modules that make the yearly subscription to his site one of the best investments I can recommend.

 

I hadn't thought of the need with blog and news modules, and then, of course you would want to this.  What came to mind initially are those awful spam pages that inject your search terms into the page title and description but don't actually have any relevant data, just links to other pages full of spam or potentially harmful code.  I think people have learned to avoid clicking on links like that in search engine listings, so you'd definitely want to make sure you're not formatting things in a similar manner or your high rankings won't equate to high click-thru's and could potentially get your domain on blacklists. 

In this case, looking at the blog module source code will probably give you exactly the code you need.

JOHN GIESY
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