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Partners and Customers logo listing and links
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 We have just created a program where we list the customers that use our software and a link to their websites on a new "Customers" page. We expect to have upwards of 100 logos with links back to their sites. I want to be sure this isn't bordering on gray or black hat link building. I think it is okay since they are actual users of our software. But there is still that slight doubt. Along these same lines, would you recommend adding a nofollow or noindex tag? Thanks for your help. 
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 Yes but we need to remember that the 100 links limit is very arbitrarily. Some sites can have less than 100 links on a page while other can have thousands and still being crawled. It really comes down to the authority of the website. 
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 Indeed - Please mark the question as answered if you are satisfied at this point  
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 Thank you everyone. One less thing for me to worry about in this crazy world of SEO.  
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 I wouldn't worry about adding the links and logos. I'd be happy to link to all my customers (do follow links) to show my appreciation. 
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 I would at least nofollow all the links, 100 external links is getting up there. In the crawl diagnostics on SEOmoz if a page has over 100 links it gets a warning letting you know that there are too many links on the page. 
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 I would probably not include all 100 customers. Maybe a sampling of your customer base? You could also nofollow the external links to sites that could be questionable. You could also noindex, nofollow that page as well. All are options. In fact, you could just put 100 links on the page if you want. I highly doubt you will incur any kind of penalty at all. Matt Cutts has dispelled the myth that you can only have 100 links on a page. You can have as many as you want as long as it makes sense and doesn't look like your are spamming search engines with link farms. I probably wouldn't worry too much about it. 
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