Is there a way of invisibly adding rel="nofollow" tags to the links on your website? Or would anybody always be able to see them if they went to "view source" on IE or Firefox?
Not sure, I am not a coder but there might be a possibility to add them in a css stylsheet. You should ask in the coder, designer or developer section
Lol, it wasn't something I was planning to do. It was just so that I know for sure when a site is using nofollow tags. This lets me be sure that the links that are pointing towards my site are being factored into SERPs and such. Thanks for the replies!
Yeah, it's definitely NOT possible to hide them without server-side scripts (cloaking). But there is an easy way to check for nofollow tags on a page - I made a bookmarklet you can add to your browser's toolbar - it's on the tools page of my blog. Click the link titled "Show Nofollow Links", then drag to your browser's links toolbar. Then proceed to the page you want to check and click the bookmark. It will highlight anything with "nofollow" in red. If it's not lit up, it's a clean link. (There are some similar ones out there, but mine's a little better because most of the other ones miss some nofollow links.)
I think you could serve one page to the user and another to the SEs but that would be considered cloaking
yes its possible. You can make a script,if the agent is google you can add the nofollow ,if not it will return null