Shared Hosting and Linking

[randfish]

My company has about 35 websites that we have contructed for clients in various fields. Many of the sites link back to our site (acknowledging us as the developers) and some also popint to other sites that we host. It's not fully inter-linked and it certainly is not intended for link-spamming, etc.

But...
I wonder whether the recently mentioned IP filters will hurt us in search engine listings. I'm especially concerned because we now have a directory site - socengine.com - that will point to all of our other sites. Will this cause problems?

Thanks for your help.