I discovered a new use for the excellent Hum link shortener WordPress plugin (provides entirely local short-links). I have a BuddyPress activity stream on this site. While I do not know if this would be the case for every activity stream set-up, especially when used with themes designed with BuddyPress in mind, long URLs (or even regular-length URLs) do not look good in posts here. However, Hum-short URLs work well, so that makes it much easier to include links to new posts (or New Leaf Journal posts) in activities.