: Is it positive or negative for the average website to allow search engines to index user comments? I've been trying to answer this question myself by researching and searching on google but

@Bryan171

Comments equal content. So the problem with indexing comments is relevancy in regards to real content. That would trouble me more than spammers, although that should be considered too, especially if they put backlinks to sites irrelvant to your sites content.

Take Stackexchange for instance. Questions and comments are very well moderated for relevant content and they are quick to edit, have you edit or put the question on hold and rightfully so.

Comments are good but need to be actively moderated at all times. Think about it, your visitors are authors.

If applicable, implement a star rating and let that be indexed as those do work well for rankings and show up in the actual search listings.
(Ie Google, Yelp results in search listing )

Vote Up Vote Down

@Cofer257

The main benefits of allowing comments are:

1) freshness: on-going comments on evergreen posts provide fresh content for Google to index, and that keeps the crawler visiting your site more frequently

2) unique content: if you enable user comments on content that are otherwise duplicate (e.g. product descriptions taken from affiliate feeds) then it can help you rank.

In sum, these are positives.

In my experience, the spam issue is very solvable with captchas, moderation, and not enabling dofollow links.

Vote Up Vote Down

@Mendez628

Spammers don't care if you let search engines index your comments, they don't even care if the comments are ever shown, the idea behind spamming is to send your spam to as many sites as possible planning that maybe 0.5% of sites won't block your message - if spammers can find you they will spam you.

That means you may as well index the comments to improve SEO, not indexing them will not solve your spam problem.

On my site comments are moderated - they don't show up at all until they are approved by me - and yet they site used to get tens of comments every day about a drug beginning with the letter v and the most offensive sexual content I've ever heard about.

I've added some very basic spam filtering to my system and spam dropped to zero.

So, what I've learned is:


If a spammer can find you he will spam you - they don't care about the specifics of your site or even check if the spam is ever displayed.
If you run a small site even a basic easy to bypass spam filter will work because the spammers don't even check if the spam is ever displayed.
If you have any user generated content you must have some form of spam control

Vote Up Vote Down

@Candy875

If you don't moderate user comments, you can have a negative impact if they contain spam.

But if your site contain a lot of quality comments, so it's a very good thing to let search engine index it!

Vote Up Vote Down