I installed the Dynamic Meta tags on my board. but i found that it use the very common keyword

example: Topic Titile: Kaspersky Anti virus

Text:
http://tinyurl.com/adfa.gif
Kaspersky Lab has proven expertise in protecting against viruses, Internet worms, email worms, Trojans and other malicious programs.

* Rapid response to the newest threats
* Highest virus and spyware detection rates
* Accurate and thorough antivirus scanning
* Easy installation and configuration

Kaspersky Anti-Virus combines traditional antivirus defense methods with the latest proactive technologies to provide solid and dependable protection against malicious programs. This award-winning antivirus software includes protection against viruses, spyware, Trojans, worms and keyloggers and features our automated hourly updates.

Download Link:
http://rapidshare.com

*****************************************
The keyword will be anti, virus, download,tiny gif,spyware,worms,trojans,rapidshare

but it does not take the main keyword: Kaspersky.

there are any way that i can make the topic title as a keyword?i mean keyword will be taken from the topic title?

Keywords are taken from the posts for topics pages, the most used and though not listed as common words first, which means that you should use the most important keywords a bit more in your case, Kaspersky only appears twice in your example.

But for sure automatic pic up will never be perfect, but the one you mention are still fairly related to the topic IMHO.

Besides, meta are not this important any more, I don't think you'd increase anything if you'd add Kaspersky in the keyword list.

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well i just check vBulletin & phpbb3 forum. i installed the advanced url seo. so the page like converted to .html which indexed my search engine very quickly.

but i posted same post on my board and a vbulleting board. but when i search the name of the topic title vbulleting board name show first. even that vBulletin has no seo. then i just check the keyword of the vbulletin borad, and the keyword use the full topic. even there are no coma( , ).

Well, you cannot compare sites like this, just basing your analysis on the script used.
Many other criteria are involved, like the size and age of the site as well as the success already reached.

Comparing a site with few thousand pages with one with hundred of thousand does not mean much.

Generally speaking, benchmarking an SEO technique is very hard, because we are dealing with parameters that are altered by the experiment, just like in quantum physics.
Ideally, an attempts to benchmark an seo technique would consist into starting two websites only being different by the SEO technique we'd like to benchmark, but in this case also, the experiment will be altered by the fact the two suite would most likely be penalized for duplicate content, since the content should be the same for the comparison to mean something precise about the SEO technique tested.

When implementing a new SEO technique on an existing site, it makes a bit more sens to try to see if things are better after done. But even in this case, many criteria will be involved.
For example, if the site was constantly loosing visitors for month before you implemented the technique, SE could need more time to be teased by it than if the site was already growing well before.
And, all this still depends on the quality of your content, a site with barely no content or with very poor content will probably not win anything by implementing SEO techniques.

This being said, it's very far from meaning that SEO techniques do not have a positive impact, when some SEO techniques are implemented on a good site, the impact will be significant, nothing predictable like you'll be first in SERP on all queries, but overall, there will be a measurable boost.
You'll find many testimonials of this here on phpBB SEO.

Then, to conclude, the vb site you are comparing yours too seems to obtain better results because it's a bigger and better known site than yours. But this does not mean that the vb site would not obtain even better results with SEO.

Recently I posted about a similar matter on phpBB.com : http://www.phpbb.com/community/viewtopi ... 5#p6703645

phpBB.com is typically an authority website, chances are great that if you reproduce your experiment there, you'll obtain the same result, but, as you can see from my post, results could be a lot better, phpBB.com is actually very far from being fully crawled.

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