Complex sentence: Barnett is also creator of SoxBlog, a webblog focused on conservative politics, social issues, golf and the Boston Red Sox, although that effort has lagged and is in hiatus as he has taken on the role of Hugh Hewitt's co-blogger.
Split into simpler sentences: Barnett is also creator of SoxBlog, a webblog focused on conservative politics, social issues, golf and the Boston Red Sox. However, this effort effort has lagged and is in hiatus since he has taken on the role of Hugh Hewitt's co-blogger.