Is Christian Tithing Biblical?

I have been having some discussions recently with my friends about tithing at church. One of my friends who graduated from seminary said to me that teaching on tithing isn't found in the New Testament. I decided to do some checking myself and dusted off my book from Larry Burkett on the Bible and Money where he lays out all the verses in the bible that talk about money in a topical format. I was surprised that I think there was only one verse in the New Testament that mentioned tithing and it had no real teaching on that subject for a believer. Google provided me with a link to an interesting article which I would encourage you to read. It is mostly aimed at those who teach that if you don't tithe to the church then you are sinning. But it lays out a lot of scripture and argues that among other things, there isn't any evidence that Jesus tithed. The most interesting minor thing in the article is on how Jesus paid his Temple tax. Jesus states that he does not need to pay the temple tax, but will do so to avoid offending anyone. In the end, he doesn't even pay it out of his own money, but this is where the story of the coins in the fish's mouth comes in. I encourage you all to read this article even though it is long (44 pages when pasted into a Word document). Lest you think he argues not to give any money to church, he doesn't say that at all. He just says that what you decide to give to the church is an offering, not a tithe. You shouldn't feel obligated by scripture to give any certain percentage.