On sites where I see advertisements the vertical space between the ad and the start of the question is very small. Example from SFF:
This is distracting to read, and it seems to be inconsistent with the vertical spacing used everywhere else in the design.
A similar effect occurs for sidebar advertisements, although it is less prominent (from Arduino):
Browser: Firefox 106.0.3 on Ubuntu, but it also occurs in Chrome.
Suggested fix: make the space a bit bigger.