Certainly sounds dodgy, but suddenly removing all of those backlinks might cause you some SEO issues.

Depending on how Google is currently reading your site it may improve as your site would seem less spammy without them or it may really hurt the site (at least to start with) loosing that many back links would maybe make Google think something is up with your site?

I would take the bullet and remove the duplicate content but warn your clients that it may take a while for the natural benefits to come through. Because if your site isn't penalised yet for having that many dodgy backlinks and duplicate content it soon will be!

It is not recommended to have more than 1

tag on a page so using

tags as your article titles might cause an SEO issue when they display on your home page.

Depends on how the site is coded to work but I would say its safer to have the titles as

tags if you are displaying them all on one page and then when the user clicks through to the article it should have a

tag.

We are having the same issue with one of our sites. We have tried all of the suggestions we can find on the internet.

Submitted out site to Bing webmaster tools, submitted the Sitemap, checked the Robots.txt...

It is now crawling the site but still not indexing any of the pages! The only thing left for us to do is wait and hope that Bing will eventually index it, but it seems weird as its being indexed fine in other search engines and generally getting good search engine rankings for keywords.

The website is www.thriveinlife360.com for reference.

We have a client base of well over 20 websites and all of them are being indexed in Bing, except from this one.

Would be interesting to know how many websites this affects and if there is a pattern within those that Bing doesn't like.

I would definitely add rel canonical tags to the website pages to let Google know which is the original page as Robert has suggested.