Multiple serp results for a page with ?iframe on the end

[stinkfoot]

Hi,

As background I have 10 <widget> sites all with 90% unique info on. They all got banished from google nearly a year ago. Now I find google is changing my title tags in serps and other things.

OK. This is actually about pages that turn up twice in serps. The first one is as it is supposed to be http://www.site.com/directory/

However there is a second one that looks like this: http://www.site.com/directory/?iframe=true&width=100%&height=100%

Now years back I thought google was supposed to be ignoring url parameters after a ?. This does not seem to be the case AND I have no idea where these parameters came from. IMO someone is linking to it like this.

Any ideas about what I can do to get rid of this/these duplicates?

Thanks
.

[edited by: Robert_Charlton at 7:34 pm (utc) on Mar 18, 2013]
[edit reason] examplified niche, delinked sample urls [/edit]

[phranque]

redirect the request with a 301 status code to the canonical url.

[stinkfoot]

of course ... thanks

[phranque]

Now years back I thought google was supposed to be ignoring url parameters after a ?

by the way - all url parameters are after the '?' - or in other words, after the first '?' in the url there are only parameters.
in addition, the url is considered unique for any change in parameters, including the same parameters/values in a different order - and google may try any combination it discovers.
in some cases, if you ask google to ignore parameters through the GWT interface, it may follow your suggestion while indexing the various combinations it has discovered and crawled.

[LifeinAsia]

I thought google was supposed to be ignoring url parameters after a ?

You're maybe thinking of "#" instead of "?" for what SEs ignore?