Hello!

Take a look at http://toolserver.org/~flacus/IWLC/. I will bot the data with my flabot.

You should ask if the articles are about the same only if they have not interwiki to any the same language.

Example it demands about

http://eo.wikipedia.org/w/index.php?title=Monchy-Cayeux&oldid=1601554

and

http://pt.wikipedia.org/w/index.php?title=Monchy-Cayeux&oldid=11204530

It is not nesesssary, both have link to [[:es]].

Maksim