Say on your website, you have an thumbnail beside a link. Each one is clickable and go to the same page. Should one put rel="nofollow" on the link for the image? and leave the other text link normally?
I'd just leave it normal, its more for outgoing links to keep your site safe. Many search engines still award certain value to them nonetheless.
I don't need to use this on images. But you can you this to normal links. It's good to post comments and others this.. to avoid spam.
Well on the page then you 2 links one with text (thinking seo?) and one with just an image with no text. You would want the search engine to value the text link more then image right? So it would seem better to put nofollow on the image. This is what I'm thinking.
I would leave it as it is... you can always have title and alt property for the image to make it equivalent to the text.
Question: You mean the difference between the following? <a href="www.mysite.com" rel="nofollow"><image src="myimage.jpg"></a> <a href="www.mysite.com" rel="nofollow">My text</a> Or will G follow a link around an image.