Sandboxie and rss aggregator (newsreader)

I was noticing that my rss reader (newzcrawler) uses the internet explorer rendering engine. I was wondering if that makes it vulnerable to the same weaknesses that internet explorer itself suffers from. I use newzcrawler everyday to keep up with the latest goings-on of many websites, so I want to keep it secure, hence i'm wondering if I should sandbox it, or if this would be overkill.

Advices appreciated, and if you want, tell of some applications you run sandboxed, and why you choose to do so.

Thanks in advance