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Okay so it's a wee bit late - but if you mouseover the company name it'll show the company id in the link preview. If you want it to show, just change the code in the company module to show "company name (ID)" instead of "company name". If you can't do it yourself, a php dev would charge you at least $10 to do it for you.
Report your issues and feature requests; https://github.com/opencats/opencats/issues