I particularly unimpressed with their point #2, which says.
If you are tempted to lock in your rate - don't; it's too late. The time to fix is when rates are on their way up, not when they have already increased 11 times. While rates may go up once or twice more, by the end of the year slowing global growth on the back of the subprime crisis should force them downwards again. What's more, at the very time borrowers might feel panicked into fixing, banks have been quietly putting up these rates such that for the first time in years the average fix is higher than the variable rate. Cynical indeed.
Those whose finances really couldn't cope with one or two additional rises could consider fixing for a maximum of one year - but lock in for longer and you risk being stuck for years paying more than you need to.
It is also pure speculation that the interest rates will increase twice more by the end of the year and it is predicting that the interest rates will be going down again in about a year's time. This goes against the forecast by RBA, as reported by this The Age's article.
For me, if after doing the sums, I am able to save some money or remain status quo, then it is worth while for me. Who knows when the interest rate will be decreasing, and more importantly, how many more increases will the interest go up by?
The other four points are worth considering.