[sfink]

Using Firefox definitely supports the existence of a free browser. Loss of market share is the #1 threat to the continued existence of a free browser. Beyond the obvious (if a tree falls in a forest, crushing the last copy of the code for a browser that has zero users, then was it a browser at all?):

    lower market share =>
    nobody testing against the free browser or fixing site breakage =>
    quirks (bugs, underdefined specifications, nonstandard features) of other browsers becoming required for a functional Web =>
    free browser is no longer a browser of the actual Web.

[prange]

I agree that submitting bug reports or patches is an important contribution.

I don’t see how that relates to market share, since regular users won’t do that.