Specs are quantitative aspects of the option such as the price
Pros
Pro
All positions tagged remote allow fully remote employees
Some job boards will allow a position to be tagged with "remote" if the job only includes some work from home days. Stack Overflow requires that candidates be allowed to work entirely remote for the remote tag to be added.
There is usually around a couple hundred remote positions listed at any given time (all jobs, not specific to just one type), which isn't a lot compared to many remote-specific boards.