Is there a limit on canonical links pointing to single URL?

[johnkingx]

lets say i have 50 pages with moreor less similar content, google sees this as duplicate content, can i use the canonical rel tag on all 50 pages to point to one page

[netmeg]

Pretty sure Google is on to that one. I wouldn't do it.

[aristotle]

Depending on your objectives, another option is to put noindex tags on all of the extra pages.

[aakk9999]

lets say i have 50 pages with moreor less similar content

What would be the reason for having so many pages with more or less similar content?

I can easily understand why a site may have 50+ pages of exactly the same content (e.g. URL capitalisation issue, parameter order issue) and rel=canonical should be fine there.

But in the cases where the content is similar but not the same - this may be an issue as netmeg said above.