Back in November last year, #Journchat was launched by PR maven Sarah Evans. Its aim was simple – use Twitter to bring journalists, PR professionals and bloggers together on Twitter in a weekly chat format. Since then, #Journchat has gone from strength to strength and brought in special guests from CNN as well as regularly topped the Twitter trends every Monday night. Lately, however, it seems to have lost its way and some of its sparkle. That’s not to say…