I have been active on Wikipedia since 2005, mostly making incremental improvements – correcting punctuation here, tightening sloppy language there – with emphasis on heraldry and polytopes but wandering over a very wide range of subjects as whim takes me.
I have set the option to add to my watchlist whatever I modify. The result was a watchlist far too big for me to keep up. (Until recently there was no option to watch for a limited time.) A few months ago I began a campaign to trim that down from 18511, one by one; at the moment it’s 14876. In a year or two I should have it licked.
I have also been looking at my past participation on Talk pages, and am gratified at how often this happened: someone said “we should rename this article to …”; others pointed out disadvantages of the proposed new title; and I, coming in late, proposed yet another title, which was adopted. Among them: “Ambiguities in Chinese character simplification”, “Fossil fuels lobby”, “Growth hormone in sports”.