Can I append a source to the subject line?

Website: http://www.mickeyopolis.com

I'm gathering Disney information from all over the web, publishing only the title and using a plug in to create a link to the original article.

I've tried to figure out if I can append (by FEED) the shown link to include a source, which is important.

Instead of:
'Disney World Free Dining Introduced'
I would like to be able to do something like:
'Disney World Free Dining Introduced (WDW For Grownups)'.

It doesn't matter if the appendage is part of the link or not.

Needs to be different per individual feed. I found the add on that allows me to append the footer, but I really need this on the link line if possible.

Any ideas? (and thanks for your time!)
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