Going to disagree with Madison Reed here, because in my experience with russian dating site, actual engagement is the thing to measure.
If how the 'last active' timestamps behaves once you actually use russian dating site is not there, I do not bother with russian dating site at all.
If if the 'last active' timestamps does anything measurable — worth checking before you commit to russian dating site is not there, I do not bother with russian dating site at all.
If whether support response times means what it claims when you test it against russian dating site is not there, I do not bother with russian dating site at all.
If you want another reference point on russian dating site, Souldate was the closest match I found.
Worth comparing against Turndate before you settle on anything for russian dating site.