I'm seeing some others affiliate link at the end of each WP post!!How to remove it?

Well this seems strange.I have been having a Site for some months now.But right now after I started to use a free Arras theme,after every post there this text displayed linking to some others affiliate or referal link.As far as I know,I've absolutely no idea where those files are hidden in my theme.I checked all my posts and I didnt see that text with links posted any where,I checked evern single.php but nothing seems to be there.
Anyone know how to remove.I dont want someone else t make money from the traffic which I get to my site.Please help

Did you try another theme? If the links are still there with other themes then it has to be a plugin or somthing else. If it is the theme then just remove it. There are so many themes available to enhance your blog, why waste your resources on a theme that may be taking away your commissions?

Biscut is right, it is either hard coded in the theme or a plugin. Some theme developers leave advertisement in the theme to make some cash if webmasters miss to change those. My guess would be that it is hard coded in the theme, you need to take a closer look at the theme files (probably located in single.php), or switch to another theme without those issues.

I tried searching the single.php file of the Arras free theme.
I tried removing this Code
<?php arras_below_content() ?>
Just above

</div><!-- #content -->

<?php get_sidebar(); ?>
<?php get_footer(); ?>

Click to expand...

Managed to remove the affiliate links.But at the end of each posts,an error shows like this

Warning: mysql_query() [function.mysql-query]: Unable to save result set in /var/www/wp-codebase/classes/response.php on line 174

Click to expand...

in several lines.Care to decode whats going on here with this theme?