I was using telnet to connect to this mud I play on and I got tired of telnet. So I started looking around for solid mudclients and found a few--but they were either flakey or bloated or shareware or lame or any number of a myriad of bad things. I decide to roll my own and do it in Python. Then I discover Lyntin--this mudclient written in Python and the maintainer hadn't touched it in months. He hands over the maintenance of the project to me. I move it to Sourceforge, put out a few versions, fix a few bugs, and voilla! I have a solid mudclient.
Then I start releasing versions with the fixes in it. And people around the world email me on occasion--I get like 1 or 2 emails a week. Some of them have patches for things that are broken. Some of them have feature requests. One of them said he didn't like Lyntin at all. But all of them were "Thanks--great job!"
That's so cool.