To Capital or not

I noticed my spell check tells me that YouTube and Google have capitals. This sent me on a quest to see if blog, weebly and other such terms warrant the capital. Sadly no, however I found that blog comes from web log. Now, I am on a quest to find a list of site terms that may assist this topic.

References

Blog. (n.d.). In Wikipedia, the free encyclopedia. Retrieved November 14, 2012, from http://en.wikipedia.org/wiki/Blog