Deal sites

Has anyone allowed their work to appear on bundle/deal sites? If so, what was the result for you?

The upsides here are volume of installs, and a boost for a guy who isn't that great at marketing (yet). Could be helpful since this is my first commercial release. 

Downsides seem to be that I'd get less per sale, and they don't currently seem to have any info on assigning licenses (my latest is available for desktop and web). Should a a first timer care about that?

What else should I consider before pulling the trigger?

Thanks!