Google Webmaster Guidelines suggests you should "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."
After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.
Best posts made by MikeRoberts
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RE: Should I noindex the site search page? It is generating 4% of my organic traffic.
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RE: 301 vs 410
There is nothing "bad practices" about allowing a non-existent page to 404. People often times forget that a 404 isn't a signal that something is broken and needs fixing, its just a status code that returns "Not Found". Sometimes it makes sense for things not to be found on your site because they were never there in the first place. 404s eventually stop being crawled and indexed.
You shouldn't just bulk redirect things to your homepage though. Its always best to have a 301 point to the most relevant page based on what the original page was. If there is no most relevant page, have you considered 301-ing them to one step up in the site navigation? (i.e. a category page or hub page)
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RE: How many directory submission per day we have to do ?
I more or less agree with EGOL. Directory Submissions are a thing of the past and are likely to get you in trouble nowadays. Getting backlinks is becoming harder and harder everyday. You need to diversify more and make sure that all those links to you look as natural as possible. It's not a bad thing to do linking yourself to get that initial push but the best possible linking strategy is a naturally occurring one. Make sure you use all relevant social avenues open to you... Facebook pages, G+, LinkedIn, Pinterest, Instagram, StumbleUpon, and so on as long as it make sense for your site to be there and you keep up with posting. Hopefully those will generate natural links back to your site as people learn who you are and grow to like your site.