Mark2Cure is listed on a few sites. If you've linked to Mark2Cure, add your site to the list.
Citizen Science Sites/Lists Edit
Mark2Cure on Scistarter.
Mark2Cure on Wikipedia's List of Citizen Science Projects.
Bioinformatics/Computer Science Sites Edit
Mark2Cure on Biostars (Thanks to Obi Griffith)
Other Sites Edit
Mark2Cure on Wikinomics, and online catalog of innovation using the internet (in German)