We were "newbies" when building one of our sites and accepted reciprocal links from anyone who would accept.
Consequently we've linked to sites that are not related to our subject matter and/or may be questionable in terms of site quality.
We've read that these OBL can and will negatively affect our rankings. First, is this correct and should we remove any OBL that don't relate or that are questionable, or do only IBL matter?
Secondly, is there software that can check the quality of link partner sites to ensure they are not banned, spamming or performing other "black hat" techniques?
This would help us evaluate whether we should remove site or not; among other criteria. Thank you in advance for any advice you can provide.