I know it will seem odd mentioning this here, but often approaching Google for assistance ties you up even more than you were at the start.
I follow some blogs on blogspot.com, on which I could comment, but a while ago I ceased to be able to do so, I could comment either as anonymous, or with a Google ID, which seems to have vanished even longer ago. There is also commenting via a URL, with which I totally unfamiliar. Presumably this is for website owners.
Is there someone here, who can assist?
No one has to agree with my opinion, but in the time I have left a miracle would be nice.