SEO : Do you think same author ID on multiple sites works?
 

Google doesn't like blog networks, but it seems having even a fictional identity with an about page on your site does help ranking. So is it a pro or con for SEO to keep the same identity for multiple sites, or would this just red flag you as running a blog network?

An example is 'the porn dude' who appears to have a number of sites all with the same 'porn dude' identity'. Doesn't seem to have done him any harm.

to answer your question, if you want to be bullet proof for manual inspection, yes changing author id might be useful. a manual reviewer might track you down with a pattern that repeats itself. on the other side, id say: the standard google algos are not able to take author ids into account and consider this as a ranking factor.