Canker sore. In some cases, the exact cause of a canker sore is unknown, but trauma or injury to the mouth or oral soft tissues may be the culprit. Other possible causes are food sensitivities, spicy, salty or acidic foods, vitamin B deficiency, hormonal shifts and stress. Cold sore.
What does xoxo mean? Hugs and kisses or xoxo is a term used for expressing affection or good friendship at the end of a written letter, email or SMS text message.
XO Communications. XO Communications is a telecommunications company owned by XO Holdings, Inc OTCBB: XOHO. XO provides managed services and converged Internet Protocol network services that combine voice, Internet access, and private data networking for small and medium sized companies, enterprises, national and government accounts. XO delivers services through a mix of fiber-based Ethernet and Ethernet over Copper.