Online talk about him has plunged to a five-year low. He’s banned or ignored on pretty much every major social media venue. In the last week, Trump’s website — including his new blog, fundraising page and online storefront ­— attracted fewer estimated visitors than the pet-adoption service Petfinder and the recipe site Delish... Trump’s continued influence isn’t translating into a bigger online audience, according to a Washington Post review of data from four online-analytics firms. Social engagement around Trump — a measure of likes, reactions, comments or shares on content about him across Facebook, Twitter, Reddit and Pinterest — has nosedived 95 percent since January, to its lowest level since 2016.