[dexen]

Consider whether their abuse of your resume actively harms you some way, be it lowering your repuation or re-directing potential clients to them.

If it does harm you, send them a cease&desist letter, based on your authorship of this text. Ask to remove the text from the website, and suggest further discussion.

Aside of that, consider negotiating some licencing fees for past and (if applicable) future use of the document. They may try to disclaim responsibility, blaming honest mistake of a random employee, but that not necessarily absolves any responsibility.

In any case, ask them to attach credit where it is due -- perhaps link to your personal website?

[nsantos]

Unless I get access to their clients list/information, and can positively identify clients that joined them largely (or even solely) because of the (relative) strength of my resumé, it'd be kind of hard to prove that their misuse of my brag sheet actively harms me, no?

Mostly, I'm interested in stories of others who've been in similar situations. Also, your suggestion implies enlisting the help of a lawyer; if so, I'd really rather have other options, since I don't have the... er, required financial capacity to do that at the moment. (Plus, is it even worth it to involve lawyers in something like this?)