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yes... this will be a big problem... but until now the fastest way to avoid is use the canonical tag...
this site is new, I published it yesterday this help´s something? rss

I read on the web to avoid use "," or "_" to this is the reason that I separated my parameters in the final slash..

Is this true? That I need avoid "," or "_" on my url ? If I could use any of those characters my url would be like this:
www.vendasclarofixo.com.br/assine-por-telefone/huawei-2555,0-2
or
www.vendasclarofixo.com.br/assine-por-telefone/huawei-2555_0-2

what do you think?

Resuming:

Is correct to do this:

http://www.vendasclarofixo.com.br/assine-por-telefone/fale-a-vontade/any_param1-any_param2-any_param3
http://www.vendasclarofixo.com.br/assine-por-telefone/alcatel-ot-208/any_param1-any_param2-any_param3

http://www.vendasclarofixo.com.br/assine-por-telefone"/>

yes, the option to post the information for this page can be considered, but it is not as simple as I have several options and would have to add several separate forms for each option

Hi,

Now I'm worried, with the case "assine-por-telefone/fale-a-vontade" and "assine-por-telefone/huawei-2555" could generate duplicated content ? Because its the same form.. there is any way to avoid this?

Its interesting for me have the words "fale-a-vontade" and "huawei-2555" on my URL... so I need avoid be penalised... but I don´t know how...

Hi,

I replied in the previous answer my real url structure, but 0-2 is any parameter that I need to my application this parameters I treat the application..
So for SEO is safe I pass all my parameters in the end of the URL? like anyurl/any/any/param-param-param-param ?

My actual url is: http://www.vendasclarofixo.com.br/assine-por-telefone

this page have an dynamic form that is filled by the parameters passed..

if http://www.vendasclarofixo.com.br/assine-por-telefone/0-2,huawei-2555 then the field "Aparelho" will be filled,

no in 0-2 the "2" is the code to fill "Aparelho" and "0" is just to keep the parameter place (this is needed for "Planos")

and if http://www.vendasclarofixo.com.br/assine-por-telefone/27-0,fale-a-vontade then the field "Planos" will be filled

can you understand?

So I could not understand your answer, one other way that I could do this is like:
http://www.vendasclarofixo.com.br/assine-por-telefone/fale-a-vontade?IdAparelho=X
http://www.vendasclarofixo.com.br/assine-por-telefone/fale-a-vontade?IdPlano=y

This is this good to SEO? And google organic ?

Hi,

I need some help to define which is the best friendly url structure for my new project, I'm in doubt for some cases, anyone could help me define which would be the best way?

domain.com/buy-online/0-1,this-cool-model    or
domain.com/buy-online/this-cool-model,0-1    or
domain.com/buy-online/0-1/this-cool-model    or
domain.com/buy-online/this-cool-model/0-1    or
domain.com/buy-online/this-cool-model_0-1    or
domain.com/buy-online/this-cool-model?Model=0&OtherParam=1

Thanks!

Best Regards,
Leonardo Lima