Q2A SEO anomaly - sites ranking poorly

Question

Today just woke up to check on how all sites using this script rank on SEO.To my shock,i feel very disappointed .

I stand to be corrected if am wrong.This script is doing poorly on search results.Even some of us who SEO plugins,seems those plugins are obsolete as the have no impact

How comes all our websites have 0% percent page score with only one site which has 34%?

What can be done about SEO of this script?

I tested all these sites below

http://question2answer.org/sites.php

Comments

What makes you say the problem is Q2A? Tell me what Q2A is doing wrong in regards to SEO.

You can’t expect to make a website and instantly have it rank at the top of Google.

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Who is giving page score? The only reason I see Q2A having bad score might be a lot of questions with small or poorly written answers. Some years back, this Q2A main forum used to be ranked quite high by Google - and it was not using any SEO tool I believe.

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Q2A sites can rank high if it has good contents that favour SEO.  The only bad thing I can find here is the related questions. They are actually non-related questions. For a specific topic q&a it may work well. But for a general category website with many categories, the related questions will have a negative impact on SEO. Otherwise, the admin should be the only one who put the tags on questions (if tags are there on the website).

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The best thing we can do with the related question is to make the  'freq' part in the line
define('QA_IGNORED_WORDS_FREQ', 10000);
on config.php (as pupi1985 said here http://question2answer.org/qa/66148/how-to-make-better-related-questions-avoiding-common-words ) to the lowest like 100 or so and later gradually increase the value as the site gets more questions. As of my experience, the number should be approx 10 per cent of the total questions. ie: for 1000 questions set the freq to 100.

note: I am not using tags. Inaccurate or irrelevant tags can spoil all the SEO part as well as search results.