Apart from this blog (which you obviously know about!) the best place to go to find recent Wallace-related articles, blog posts, news items etc is the Alfred Russel Wallace Facebook page. This page lists all recent material about Wallace which I have found on the Web and which I personally think is interesting or important. The one thing generally NOT listed are Wallace-related events, which are instead listed on the NHM's Wallace100 Events Diary.
The Wallace Memorial Fund's Wallace News Blog is also another place to look, as is the automated news aggregator on the bottom left of the Wallace Fund's website (scroll down the page). The latter lists all new Wallace-related pages as they appear on the Web, apart from most blog posts which for some reason aren't picked up. So if you don't trust my selection on the Facebook page then check the news aggregator on a regular basis.