Robert_Charlton - 7:42 am on Feb 22, 2004 (gmt 0)

so for good ranking,do I need different title and description elements for every category page(dynamic page)?

Yes... as in pageone's excellent post that leads off this thread... the title and description should reflect the content of the individual page...

"Titles should always be unique for each page, no duplication."

I don't know whether I'd go so far as to say no duplication, but to give me broader optimization I do try to keep my titles unique on optimized pages. If nothing else, vary the word order. What you do in the title, of course, needs to relate to what you do on the page.

i have added different keywords for every category page.

If by this you mean "meta keywords," you should be putting much more effort into your title.

The meta keywords tag is virtually useless. Inktomi and Yahoo have said they use it, but I have pages with no keywords tag ranking in the top 10 on these engines competing against millions of other pages. If you change one word in the title, though, some of these rankings are gone.

Use your keywords as a way of narrowing your page down in your mind to the most important 10 words or so (that's all) on the individual page, and then focus your title down to, say, 70 characters or less, targeting words in that list.