Checkusers in Russian Wikipedia abused the 'checkuser' rights (for example linked to me unrelated edits from open proxy with marasmic vandalism -- create marasmic attackpages-like topic on «Request for Administrators» about Kalan, obviously with a view to Kalan thought that I was a degenerat-pəderast); also mail send to Wikimedia Foundation.
Such decisions are very bad name in the wiki projects.