Curved edges have arrived in NodeXL (v. 174).
Here is a network visualization with all the edges drawn as straight lines:
The same network graph can be drawn with slightly curved edges:
The result is a slight improvement in readability.
To start, the edges curve just a bit. Soon, we will allow user control over the extent of the curvature.
Turn on curved edges by checking the box in the Graph Options dialog accessed from the graph pane.