No problem. I keep one for word counts just so they're all easily accesible. One called  Possible is for things I think may be of use but I'm not sure. Questions is for things that raise questions still needing to be answered - who did what for example? Quotes is for when I think of an interesting statement for someone to say but I'm not sure where he/she would say it.
When I'm researching I also have a tag Must Visit for items of research that require a personal visit when I'm on the road in Italy doing the legwork.