Why would you put a nofollow on the link to the homepage? Advice is not to use nofollow on internal links -
sources: http://searchenginewatch.com/sew/news/2298312/matt-cutts-you-dont-have-to-nofollow-internal-links and https://support.google.com/webmasters/answer/96569?hl=en
To quote the last link:
Here are some cases in which you might want to consider using nofollow:
- Untrusted content: If you can't or don't want to vouch for the content of pages you link to from your site — for example, untrusted user comments or guestbook entries — you should nofollow those links. This can discourage spammers from targeting your site, and will help keep your site from inadvertently passing PageRank to bad neighborhoods on the web. In particular, comment spammers may decide not to target a specific content management system or blog service if they can see that untrusted links in that service are nofollowed. If you want to recognize and reward trustworthy contributors, you could decide to automatically or manually remove the
nofollowattribute on links posted by members or users who have consistently made high-quality contributions over time. - Paid links: A site's ranking in Google search results is partly based on analysis of those sites that link to it. In order to prevent paid links from influencing search results and negatively impacting users, we urge webmasters use
nofollowon such links. Search engine guidelines require machine-readable disclosure of paid links in the same way that consumers online and offline appreciate disclosure of paid relationships (for example, a full-page newspaper ad may be headed by the word "Advertisement"). More information on Google's stance on paid links. - Crawl prioritization: Search engine robots can't sign in or register as a member on your forum, so there's no reason to invite Googlebot to follow "register here" or "sign in" links. Using
nofollowon these links enables Googlebot to crawl other pages you'd prefer to see in Google's index. However, a solid information architecture — intuitive navigation, user- and search-engine-friendly URLs, and so on — is likely to be a far more productive use of resources than focusing on crawl prioritization via nofollowed links.
=> paid liks & untrusted content are not really applicable for internal links - crawl prioritization hardly applies either.
Hope this clarifies
Dirk
