strange backlinks

[paraleadogg]

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I have noticed some strange backlinks to some of my sites recently.

The sites seem to all be the same but with different domains?

for example vsoldiers.com, ubillionaires.com, lancetree.com etc

All my links seem to be the domain followed by '?c=692'

Obviously I didnt request these links and so it is a little concerning

Any had any experience of something similar?

[Sikhar]

Actually these site collect the data to maintain his database and they automatically added your site on the web without any reason whenever any site launched on the web.