Hello, My website is http://www.vietnamvisacorp.com is using the href links without meta tag rel="dofollow" such as I am using . Should I put ref="dofollow" in this:  Thank you!

Hi, I saw my website have a problem about meta language, I do some search and found that I need to add  on the , with 'll' is language code and 'cc' is country code. But I am confused what should I do, because my website is world wide, not launch at specific any language and country. Please give me an advice in this case. Thanks,

Hi, I have a primary website and beside that I also have some secondary websites with have same contents with primary website. This lead to duplicate content errors. Because of having many URL duplicate contents, so I want to use the robots.txt file to prevent google index the secondary websites to fix the duplicate content issue. Is it ok? Thank for any help!

Hello, I have use the http://copyscape.com to check the duplicate content and found that my website have some errors duplicate contents with other competitors website. But a problem is, I could not define the reason of this (my website copied the competitors website or they copied of mine) To solve this issues, should I modify a unique my contents (this is difficult) or anyone have a good solution for this problem? Please give me advice? Thank you!

Hello, Anyone could tell me the benefit SEO of link title attribute. Is **Link Title **ranking factor? Thanks

Hi, My 404 page did not have meta description. Is it an error? Because I run report and seomoz said that a problem. Thanks!

When develop site, I have a test domain is sandbox.abc.com, this site contents are same as abc.com. But, now I search site:sandbox.abc.com and aware of content duplicate with main site abc.com My question is how to remove all this link from goolge. p/s: I have just add robots.txt to sandbox and disallow all pages. Thanks,