User Victor Stoyanov seems to keep posting links to Groupdocs.com on every question even remotely related to PDFs or document management. Some recent examples:

• http://superuser.com/questions/43321/document-management-system/413122#413122
• http://superuser.com/questions/41268/how-to-create-a-simple-document-assembly-application-for-word-documents/413116#413116
• Opening doc files as docx

According to this website he (or at least someone with the exact same name) is working for GroupDocs, which would make his posts plain self-promotion. Can someone look into it and deal with him?