What kind of services would you be looking for?
We have a good start now with tilde.news, tildegit.org, and tilde.zone for Reddit, GitHub, and Twitter. The only thing next may be something more like early Facebook, Imgur, or Pinterest? Really, anything that helps grow community involvement outside of the IRC would be neat.
Also, please hard wrap mails sent to lists :)
I sent that initial response from the "Reply" feature in the list.tildeverse.org archives. May be worth adding in some post-processing to that so it automatically hard wraps responses typed into the textbox.
~aewens