Have you tried searching for any term such as UA Finance Hong Kong Jobs and some search results are list of search results themselves?
Matt Cutts has mentioned this already before and acknowledged that “users usually don’t want to see search results (or copies of websites via proxies) in their search results”.
Worse, when you click on search results, the top resulting pages don’t yield anything of value.
For example, we tried to search for “UA Finance Hong Kong Jobs” query. Two top results in the list are pages from JobsDB and Recruit.Net. Both search results emulate a search query as if we went to these sites and typed a certain query ourselves.
JobsDB search result for “ua finance hong kong jobs”.
Recruit.net search result for “ua finance hong kong jobs”.
Sadly, both of them also said “sorry, no job available from UA Finance”. Yes, you should be sorry for wasting everyone’s time getting nothing out of these pages. But who can blame these sites if Google continues to display them anyway?
Matt Cutts reminds us to place a line in robots.txt to prevent search engines from indexing certain pages that don’t add much value. Google Webmaster Guidelines doesn’t enumerate which pages don’t provide much value but suggests us on what to do.
Use robots.txt to prevent crawling of search results pages or other auto-generated pages that don’t add much value for users coming from search engines.
If we experience no such value within search results as stated above, then we can count them among the list of pages that provide no value. I don’t think Google puts penalties on pages similar to above, that’s why they recommended the use of robots.txt. But I could be completely wrong.
There has been a brief review of SEO awareness of Hong Kong’s job sites a year and half ago and it seems that these websites haven’t changed that much so most of the post entries still apply.