Score: 97: Practically perfect in every way*.
* It's impossible for me to be objective, but I'll try!
Again, as objectively as possible I tried to score it and came up with a 97, with the major deduction coming from not doing imports of files in the 'traditional' way, but I'll explain that later. I feel Triweaver competes nicely with the current offerings, and is structured in a way that it can scale\extend rapidly based on feedback from users. I intend to keep it free for users, and will (hopefully) move towards a banner ad revenue model, so what's currently blank space on the sides and bottom will - over time - become ads for triathlon products we triathletes care about. I'm looking at alternative revenue sources as well, such as rewards for continued usage, referral rewards, etc, but I just don't see charging users ever in the future. However, if the community says they believe differently (can't see anyone asking for people to take their money, but I could be proven wrong!), then I'll change accordingly.
I've been using Triweaver for my own training and planning for the last 6 or so months, and I find logging on often, getting emails daily, and making decisions based on my data is logical, quick, and pleasant using this tool. The goal has always been to create something of worth, not to scrape money from coaches and athletes, and I think by following that principle it will grow into something valuable, if it isn't already.
My last comment before launching into the review is that it's my intent to make the user interface open source, allowing the tech-savvy engineer athletes of the world who stumble upon Triweaver to extend it in ways I haven't thought of.
OK, let's get going!