I have several old web2.0s, 2-5 years old for my now tanked websites. They are one page web2.0 so cant add new but can only edit the previous one. I can add brand new article with contextual backlink by editing the previous one. Only problem is these Web2.0s have URL/Backlinks based on unrelated keyword. Would these aged but unrealted web2.0s benefit my new website?